Red Sour Raspberry Hayati Pro Max Plus 4000 Replacement Pods

Overview

The Red Sour Raspberry Hayati Pro Max Plus 4000 Replacement Pods by Hayati in Red Sour Raspberry at 10mg and 20mg. Free UK delivery over £20, same-day dispatch on weekday orders before 4pm.

Overview: Hayati Pro Max Plus 4000 Replacement Pods in Red Sour Raspberry

These are sealed, pre-filled replacement pods for the Hayati Pro Max Plus 4000 system, in the Red Sour Raspberry flavour. The idea behind them is simple. You keep the rechargeable battery base, and when a pod runs dry you pull it out and click a fresh one in. There is no bottle to open, no coil to prime by hand and no whole device to throw in a drawer. For many UK vapers that is the practical reason to choose a pod format over a single-use device, and it matters more now that single-use vapes have been banned from sale in Great Britain since 1 June 2025.

Hayati has built its UK following on high-capacity pod products with a mesh coil and a long list of sweet and fruit-led flavours. The 4000 in the name is the manufacturer's puff rating for each pod. Like every puff claim in the industry, it is an estimate produced under controlled test draws, so use it as a planning guide rather than a promise. How long a pod lasts for you depends on how long you draw, how often you vape and how firmly you pull on the mouthpiece.

One point needs to be clear before you add this to your basket: this listing is for the pod only. It is not a battery base and it is not a complete kit. If you do not already own a compatible Hayati Pro Max Plus base, the pod will not work on its own, and you should buy the matching base first.

Here is the product at a glance.

• Type: sealed, pre-filled replacement pod for the Hayati Pro Max Plus 4000 base
• Flavour: Red Sour Raspberry, a red raspberry sweet with a tart, sour finish
• Rated puffs: up to roughly 4,000 per pod, according to the manufacturer
• Coil: mesh coil built into the pod, so each new pod brings a new coil
• Nicotine: nicotine salt e-liquid, with the strength printed on the pack and shown on the variant you select. The UK maximum for any nicotine vape is 20mg/ml (2%)
• Refillable: no, the pod is sealed and designed to be replaced rather than refilled
• Age restriction: adults aged 18 and over only

The rest of this page covers what to expect from the flavour, how the pod performs, how the battery base fits into the picture, how to choose a nicotine strength, and what to do when something goes wrong. We have tried to be straightforward about where this format is strong and where another type of device would suit you better.

A short note on who this is for. Nicotine is addictive, and vaping is intended for adult smokers who want an alternative to cigarettes. If you do not smoke or vape, there is no good reason to start. If you are an existing Pro Max Plus owner who wants a different flavour or a straight replacement, this pod is exactly the component you need.

Red Sour Raspberry flavour profile

Red raspberry is one of the more recognisable fruit notes in vaping because it has two sides. There is a soft, sweet, slightly jammy side, and a sharper, seedy, slightly acidic side. Red Sour Raspberry pushes the second half forward and then adds a sour-sweet coating of the kind you find on fizzy raspberry sweets. If you have only tried blue raspberry flavours, this is a different animal. Red raspberry tastes closer to real fruit and sorbet, while blue raspberry tastes closer to a boiled sweet or a slush drink.

On the inhale, the first impression is a rounded red raspberry sweetness, more berry than candy. Within a draw or two the sour element arrives as a mouth-watering tang along the sides of the tongue. Think of the sharp sugar on a sour sweet rather than the bite of lemon juice. It is lively without becoming harsh at the back of the throat.

On the exhale, the tartness fades quickly and leaves a clean raspberry sweetness behind with just a faint sour edge. Nothing in the name suggests a cooling agent, and the flavour is built around fruit and sour candy rather than menthol, so the vapour should stay on the fruit side and not finish icy. If you want a cold finish, look at the Ice variants in the same range instead.

How the flavour tends to behave across the life of a pod:

• First few hundred puffs: the sour note is at its sharpest and the raspberry is bright and clear. If you find it a touch tart at first, give it a day or two.
• Middle of the pod: sweetness and tartness settle into balance. For many people this is the most pleasant stretch.
• Final stretch: as the liquid level drops, flavour can thin slightly and the vapour can run warmer. That is normal for any pre-filled pod and a sign to plan your next one.

Sour flavours divide opinion. Some vapers love the zing and find a plain sweet fruit flavour dull after a day or two. Others find acidity tiring on the palate and prefer something rounder. A reasonable test is to ask whether you enjoy sour sweets. If you do, this flavour is likely to suit you. If you steer clear of them, a smoother berry or a blended fruit flavour is a safer choice.

One more practical point. Sweet profiles can cause what vapers call vape tongue, a temporary dulling of taste after sticking with one flavour for a long time. If the raspberry seems to fade even though the pod still has plenty of liquid, switch to a different flavour or take a break for a day. Your palate usually recovers quickly and the pod will taste normal again.

Performance and puff delivery

The headline figure is up to 4,000 puffs per pod. That number comes from the manufacturer's testing, which normally relies on short, regular draws of a couple of seconds and divides the liquid volume by the amount consumed per puff. Real life is less tidy. Longer, deeper or more frequent draws use liquid faster, and short, gentle draws stretch it.

A practical way to turn the rating into something useful is to look at your own habits.

• Light use, around 100 puffs a day: a 4,000-puff rating would last in the region of 40 days.
• Moderate use, around 200 puffs a day: roughly 20 days.
• Heavy use, around 300 puffs a day: roughly 13 days.

Treat these as working estimates. Many people end up a little under the printed figure because real draws are longer than lab draws. A fair expectation is that a pod will last far longer than a small closed pod of the type sold with older starter kits, but it may fall short of the exact number if you vape heavily or take long pulls.

Vapour production is moderate. This is a mouth-to-lung style pod system built for smooth, steady delivery rather than large clouds. Each draw gives a consistent medium plume, which suits discreet use and keeps liquid consumption predictable.

Throat hit at the usual 20mg/ml nicotine salt strength is noticeable but soft. Nicotine salts are formulated to feel smoother at high strengths than traditional freebase liquid does. If you are coming from cigarettes, the sensation should feel familiar without the harshness. If you are used to a lower strength, it may feel stronger than you expect, which we cover in the nicotine section below.

Consistency across the pod is where mesh-coil designs earn their place. Because the coil heats evenly, the thousandth draw should feel close to the first. You should not see a sudden cliff where the flavour disappears. If the vapour becomes noticeably warm, the flavour goes flat or you pick up a dry, scorched note, the pod is almost certainly nearly empty.

Draw activation is the other thing to know. Pod bases of this type are usually draw-activated, so there is no fire button. You inhale and the device responds. That keeps things simple, but it also means a blocked airflow path or a poorly seated pod can stop it from firing. We cover that in the troubleshooting section.

Overall, the performance profile is steady and predictable. It will not give you the dense clouds of a sub-ohm kit, and it is not trying to. It aims to deliver a reliable, flavourful draw over a long period with minimal fuss.

Design and build quality

The Pro Max Plus system is built around a slim, pocketable base with the pod seated in a snug cradle at the top. The pod itself is a sealed unit with a moulded mouthpiece, a transparent or semi-transparent window on most versions so you can see the liquid level, and metal contacts that connect to the base. The look is practical and clean rather than flashy.

A few build points are worth knowing before you buy.

• Pod fit: the pod seats into the base with a firm click. A good fit matters because the electrical contacts need steady pressure to work. If a pod feels loose or wobbles, remove it and reseat it.
• Mouthpiece: a rounded, slightly flattened mouthpiece sits comfortably on the lip and is easy to wipe clean. Moulded plastic mouthpieces like this are standard across the category and do the job.
• Liquid window: being able to see how much liquid is left saves guesswork. When the level drops to the bottom of the window, plan a swap.
• Sealing: new pods are sealed against leaks in transit. Keep the pod upright where you can, because lying it on its side for long periods can encourage seepage around the airflow channel.
• Weight and size: the base is light enough to carry in a jacket pocket without noticing it, and it does not look out of place on a desk.

Because the pod is plastic and the base is a compact rechargeable unit, treat the whole system as you would any small electronic device. Do not drop it on hard floors. Do not carry it loose in a bag with keys and coins pressing on the contacts. Keep it away from water.

Build quality in this category is generally decent but not indestructible. The pod is a consumable by nature, built for a few weeks of use rather than years. The base is the part that needs to last, and how well it lasts depends mostly on how you treat the charging port, the contacts and the battery.

A note on colour and finish: the pod itself is neutral in appearance and the flavour is identified by the label and packaging, so check the name on the pack before you fit it. If you keep several flavours on the go, store spare pods in their original packaging so you can tell them apart. Pods from the same range can look very similar once they are out of the box, and it is easy to mix them up.

Finally, remember that the mouthpiece is the part that touches your lips. Wipe it with a clean, dry cloth every so often. Do not use alcohol wipes or cleaning sprays on it, because residue can end up in the vapour.

Battery and charging

The pod holds no power of its own. All of the energy comes from the rechargeable base, so battery performance is a question of how the base copes with a pod built to last thousands of puffs. Bases in this size class typically carry a battery in the several-hundred-milliamp-hour range. If you want the exact mAh rating for your own base, check the printing on the device or its packaging, because it can vary between batches and revisions.

What that means in practice:

• One charge will not outlast a full pod. A pod rated at around 4,000 puffs will usually need several charges over its life. Plan on topping up the base every few days at moderate use.
• Charging is done over USB-C on current bases. Check your own base to confirm the port type, and use a decent cable with a standard 5V charger.
• A full charge from low typically takes roughly an hour, though this varies with the charger and the base.
• Vaping while charging is possible on some bases, but it is wiser to let the device charge undisturbed, because heat and moisture are not a good combination.

Charging safety deserves a few plain words. Use the cable that came with the device or a reputable replacement. Do not charge on a bed, a sofa or under a pillow, where heat cannot escape. Do not leave a charging device unattended for hours. If the base becomes unusually hot, swells, smells odd or leaks, stop using it and move it somewhere safe, away from anything flammable. A damaged lithium battery should not be kept in the home.

Battery longevity. Lithium-ion cells in compact devices tend to hold up for several hundred charge cycles. You will get more life out of the base if you charge it when it is low rather than letting it go completely flat every time, and if you avoid leaving it in a hot car or in freezing conditions.

Do not mix up a flat battery with a dead pod. This is one of the most common mistakes. If the base does not respond, charge it for at least thirty minutes before deciding anything is wrong with the pod.

When the base eventually stops holding a useful charge, it should be recycled rather than binned. In the UK, take it to a retailer take-back point or a council household waste recycling centre that accepts small electrical items and batteries. Never put a vape or a lithium battery in household rubbish or kerbside recycling, because crushed cells can start fires in collection vehicles and waste sites.

Mesh coil technology and vapour quality

Every replacement pod carries its own coil, and in this system that coil is a mesh design. Understanding what that means helps you get more from the pod and spot problems early.

A traditional round-wire coil is a wire wrapped around a cotton wick. A mesh coil is a thin, flat sheet of metal mesh that sits against the wick. The mesh has a much larger surface area in contact with the liquid, so it heats more evenly and more quickly. In practice that gives you three benefits.

• Faster ramp-up: the coil reaches working temperature almost as soon as you start drawing, so the first puff after a pause is as good as the last.
• More even flavour: there are fewer hot spots on the coil, so the liquid vaporises without scorching one area while leaving another cool. That matters for a fruit flavour like raspberry, where a hot spot can flatten the delicate sour notes.
• Longer coil life per unit of liquid: because the load is spread across a wider area, the coil holds up better over the long life of a high-capacity pod.

Mesh coils in pre-filled pods usually run at a modest resistance and low wattage, which is part of why battery life holds up and why the vapour is warm rather than hot. The exact resistance is set by the manufacturer and is not something you can adjust on a sealed pod. There is no wattage or temperature setting to fiddle with. That is by design: it keeps the experience simple and removes the chance of getting the settings wrong.

Looking after the coil matters because you cannot replace it separately. The things that shorten coil life are all within your control.

• Chain vaping: taking draw after draw with no rest does not give the wick time to re-saturate, and a coil that heats a half-wet wick will scorch it.
• Very long draws: long pulls can outpace the wick's ability to deliver liquid. Several short draws are kinder than one marathon pull.
• Running the pod to empty: once the liquid is gone, every draw is dry and burns the wick. Change the pod when the window shows the level is low.
• Priming skipped: a new pod needs a minute or two to let the wick soak up liquid before the first draw.

Because the coil is part of the consumable, you never need to buy coils separately, rewick or clean one. For people who find coil maintenance tedious, that alone is a reason to choose a pod format.

Nicotine strength guidance

Nicotine is addictive, so choose a strength to suit your needs rather than going as high as the law allows. In the UK the maximum legal strength for any nicotine vape is 20mg/ml, often written as 2%. That cap applies to disposables, pods and bottled e-liquid alike. These pods use nicotine salt e-liquid, which delivers nicotine more smoothly than traditional freebase liquid, especially at higher strengths. Always check the strength on the variant you are buying, because it is printed on the pack and listed on the product page.

The milligram figure describes how much nicotine is in each millilitre of liquid. It does not tell you exactly how much reaches your bloodstream, which depends on how you draw, how often, and the device itself. As a rough guide:

• Heavy smokers (around 15 or more cigarettes a day): the top strength of 20mg/ml is the usual starting point. It gives the closest match to what your body is used to and helps to stop cravings pulling you back to cigarettes.
• Moderate smokers (roughly 5 to 15 a day): 20mg/ml can still work, but you may find a lower strength feels more comfortable if the range offers one.
• Light or social smokers: a lower strength is normally more appropriate. Full-strength nicotine salt can feel too strong if you do not smoke heavily.
• Ex-smokers using vaping to stay off cigarettes: many step down gradually over weeks or months. That is easier when a range of strengths is available.

Signs the strength is too high: dizziness, nausea, headaches, hiccups, a racing pulse or an unpleasant harshness in the throat. If you feel any of these, stop, drink some water and consider a lower strength or fewer puffs.

Signs the strength is too low: cravings that return quickly, taking far more puffs than you intended, or going back to cigarettes between pods. If that happens, a step up in strength may help, within the legal limit.

A sour flavour can also change how strong a vape feels. Acidity adds a sharpness at the back of the throat, and some people read that as a stronger throat hit even when the nicotine level is the same. If you are sensitive to this, a lower strength with a sour flavour may feel more comfortable than the same strength with a smooth one.

Nicotine is not suitable for everyone. If you are pregnant, breastfeeding, have a heart condition or take regular medication, speak to a pharmacist or GP before using any nicotine product. If you want to stop using nicotine altogether, NHS stop smoking services and nicotine replacement therapy are well-evidenced options and are worth asking about.

Finally, keep every nicotine product out of reach of children and pets. A sealed pod is safer than an open bottle, but a damaged pod can leak liquid, and nicotine liquid is hazardous if swallowed or if it gets on skin or in the eyes.

Who these pods are for

Choosing a vape is partly about the device and partly about your own habits. These pods suit some people very well and others less well, so it helps to be honest about which group you fall into.

They tend to suit:

• Adult smokers switching from cigarettes who want a simple, no-fuss format. A tight draw, a familiar throat hit at 20mg/ml and no liquid to handle make the change easier.
• Existing Pro Max Plus owners who want a new flavour or need to replace a finished pod. This is the most straightforward use case.
• People who value convenience over tinkering. There are no settings, no coils to prime by hand and no bottles to carry.
• Vapers who want long gaps between purchases. A high-capacity pod means fewer pod changes than small closed-pod systems.
• Fans of tart, fruity flavours. If you gravitate towards raspberry, sour sweets and berry profiles, Red Sour Raspberry sits comfortably in that space.

They are probably not the right choice for:

• Anyone under 18. It is illegal to sell nicotine vapes to under-18s in the UK, and we do not sell to them.
• Non-smokers and non-vapers. Nicotine is addictive, and there is no reason to start.
• Vapers who want big clouds and adjustable power. A sealed pod with fixed output will not scratch that itch. A refillable sub-ohm kit is a better fit.
• People who want to mix their own liquid or use bottled e-liquid. These pods are sealed and not refillable.
• Anyone who dislikes sour flavours. If tang bothers you, pick a smoother fruit flavour.
• Those without the matching base. The pod is a replacement part. If you do not already own a compatible base, buy that first and check compatibility before you order.

It is also worth thinking about how you vape. If you take occasional puffs spread through the day, a pod rated for thousands of puffs will last a long time, and you may find that the flavour is less fresh by the end of it. If you vape often and in longer sessions, you will get more out of the capacity, but you should plan your base charging around it.

Finally, think about where you vape. A pod system is quiet and low-profile, which suits indoor spaces where vaping is permitted and shared spaces where you want to be considerate. Always follow the rules of the venue, workplace or transport service you are in, because many places in the UK restrict vaping even where smoking rules do not apply.

How to fit and use the pods

Fitting a replacement pod takes a few seconds and needs no tools. Follow these steps for the best start with each new pod.

• Step 1, check the pack. Make sure the pod is sealed, is the flavour and strength you ordered, and is within its best-before date.
• Step 2, prepare the base. If you are replacing a used pod, gently pull the old one straight out. Wipe the metal contacts on the base with a dry cloth or cotton bud if there is any residue.
• Step 3, remove packaging. Take off any protective film, bung or cap covering the mouthpiece or the airflow inlet, as directed by the pack.
• Step 4, press the pod in. Line the pod up with the opening and push it in firmly until it clicks into place. Do not twist or force it.
• Step 5, let it settle. Wait a minute or two so the wick can absorb the liquid. This reduces the chance of a dry first puff.
• Step 6, take gentle first draws. Inhale slowly through the mouthpiece. Most bases of this type are draw-activated, so there is no button to press, but check your manual to confirm.

Draw technique. This is a mouth-to-lung style system. Draw into your mouth for two or three seconds, hold for a moment, then inhale to the lungs and exhale. Keep draws smooth rather than sharp. A very hard, fast pull can cause gurgling or draw in liquid that has not yet been vaporised.

Pacing. Leave a few seconds between draws. That keeps the coil at a steady temperature and the flavour clean, which is especially useful with a sour fruit profile, where a hot coil can make the tartness harsh.

Storage.

• Keep the base upright when you can.
• Do not leave it in direct sun, a hot car or a freezing place.
• Keep it away from children and pets.
• Store spare pods in their packaging, in a cool, dry spot.

When to change the pod. Change it when the liquid window shows the level is low, when the flavour fades and stays faint, or when the vapour turns hot and dry. Continuing to draw on an empty pod will burn the wick and leave a bitter taste that can linger in the pod contacts.

Disposal. A finished pod contains a small amount of residual liquid and a coil. Do not put it in household recycling. Take used pods to a retailer take-back point or a council recycling centre that handles small electrical items and batteries. Many vape shops and supermarkets in the UK now offer drop-off bins for this purpose.

Troubleshooting common problems

Most problems with replacement pods are minor and have simple fixes. Work through the likely cause before assuming a pod is faulty.

• No vapour, or the base does not respond. First check that the pod is clicked in fully. Remove it, wipe the contacts on both the pod and base with a dry cloth, and reseat it. Check that the base has charge, because a flat base looks like a dead pod. If you have charged the base and the pod is seated but nothing happens, try a different pod, which helps to show whether the pod or the base is at fault.
• Weak or muted flavour. This can be vape tongue, a nearly empty pod or a pod that has not wicked fully. Give a new pod a couple of minutes, try a different flavour for a day to reset your palate, and check the liquid level.
• Burnt or harsh taste. This usually means the wick has run dry or the pod is nearly empty, often after chain vaping. Stop using that pod and replace it. A burnt coil cannot be fixed.
• Gurgling or spitting. Excess liquid in the airflow path can cause this. Hold the base with the mouthpiece pointing down for a moment, wipe the mouthpiece, and take smoother draws.
• Leaking from the pod or base. Mild condensation around the mouthpiece is common and normal. If liquid is pooling, wipe it off, keep the device upright and avoid squeezing the pod. If a new pod is leaking from the seals, contact the shop with your order number and photographs.
• The base will not charge. Try another cable and another power source. Check the charging port for lint and clean it gently with a wooden toothpick. If it still will not charge, the base may need replacing.
• Vapour feels hot. Allow longer gaps between draws, and consider whether the pod is nearly empty.
• Harsh throat hit. A nicotine strength that is too high for you, or a very hard draw, are the common causes. Try softer, shorter puffs, and if the problem continues consider a lower strength next time.
• Sour taste is too sharp. Acidic flavours can feel stronger on a dry mouth. Drink some water and give it a few puffs to settle. If it still bothers you after a day, a sweeter flavour will suit you better.

A simple rule of thumb: if the problem started with a new pod, check the fit and give the wick time. If it started after weeks of use, the pod is probably at the end of its life, and a fresh one will fix it. If problems follow you from pod to pod, the base is the more likely cause.

Never try to open, pierce or refill a sealed pod, and never attempt to repair a damaged battery base. If anything about the device looks swollen, scorched or wet inside, stop using it and dispose of it safely at a recycling point.

Value for money

Judging value for a pod is about cost per puff and cost per day, not just the price on the tag. Because the pod is rated at up to around 4,000 puffs, the cost per puff can be low if the pod performs close to its rating.

Here is a simple way to work out what a pod costs in real terms.

• Step 1: take the price of the pod shown on the page.
• Step 2: estimate how many days it lasts based on your use. At 200 puffs a day against a 4,000-puff rating, that is roughly 20 days.
• Step 3: divide the price by the number of days to get a daily cost.

Compare the daily figure with what you spend on cigarettes. A pack of 20 now costs well over ten pounds in the UK, so someone on a pack a day spends a large sum every month. Switching entirely to vaping is, for most people, a substantial saving even after the cost of the base and the occasional replacement pod. The saving only appears if you actually stop smoking. If you end up using both, your costs add up rather than fall.

Where the value comes from:

• Reusable base. You buy the hardware once and only replace the pod. That is cheaper over time than replacing a complete device, and it creates less waste.
• Long pod life. A high-capacity pod means fewer purchases, fewer deliveries and fewer trips to the shop.
• No separate coils or bottles. The coil is part of the pod, so there are no extra consumables to buy.
• Multi-buy options. If the listing offers multi-pack pricing, buying several pods at once usually lowers the cost per pod, particularly once you have settled on a flavour you enjoy.

Where value can fall short:

• If the pod lasts fewer puffs than rated, the cost per puff rises. Heavy, long draws are the usual cause.
• If you only vape occasionally, a large-capacity pod may age before you finish it, so you may not get through all of it before the flavour dulls.
• Refillable pod kits that take bottled nicotine salt are usually cheaper per millilitre. You pay for the convenience of a sealed pod.

A fair summary: for adults who already own the base and want a hassle-free way to keep vaping, a high-capacity pod is reasonable value. It is not the cheapest route if cost is your only concern, and the best financial reason to vape remains the cost of cigarettes you no longer buy.

Finally, keep a stock of one spare pod. Running out mid-week and falling back on a cigarette is the single most expensive mistake a switching smoker can make, in cost and in progress.

How these pods compare with the alternatives

Choosing between pod systems is mostly a question of format, not of one being right for everybody. Here is a fair look at how this pod stacks up against other options a UK vaper might be weighing up.

• Versus small closed-pod systems such as Vuse ePod or Elfa-style pre-filled pods. Those typically hold around 2ml per pod, a size linked to the UK limit on pod and tank capacity for nicotine products. They are easy to carry and simple to use, and they run out quickly, so you change pods more often. A high-capacity pod like this one means fewer changes, but the base can be a touch larger and you pay more for each pod up front.
• Versus other rechargeable pod kits such as Lost Mary and Elf Bar pod systems. These are similar in spirit, with a rechargeable base and replaceable pods in sweet and fruity flavours. The choice often comes down to flavour range and which base you already own. Pods are not interchangeable between brands, so if you already own one system it usually makes sense to stay with it.
• Versus the Blue Sour Raspberry flavour in the same range. If you like the idea of a sour raspberry but want a candy-slush profile, the blue variant is the more sweet-shop option. Red Sour Raspberry tastes closer to real berry and is the more fruit-led of the two.
• Versus refillable pod kits such as the Vaporesso XROS or OXVA Xlim. Refillable kits let you fill your own nicotine salt bottles, which is usually cheaper per millilitre and gives you a much wider flavour choice. The trade-off is effort: you handle liquid, fill pods, replace coils and accept the risk of the odd spill. These pre-filled pods remove all of that, which is the whole point of them.
• Versus sub-ohm and mod kits. They produce bigger clouds, use more liquid and need more care and knowledge. They suit hobbyists and anyone who likes to adjust settings. They are not designed for the simple, cigarette-like feel that a pod system aims at.
• Versus nicotine replacement therapy. Patches, gum and lozenges are well-evidenced aids and are available through NHS services. Vaping offers the hand-to-mouth habit and inhalation ritual that those products lack, but it is not a licensed medicine, and some people do better with NRT or a combination of both.

Where this pod is genuinely strong: simplicity, a long run between changes, a mesh coil that keeps flavour consistent, and a clear fit for existing Pro Max Plus owners. Where it is weaker: it depends on a compatible base, it cannot be refilled, it costs more per millilitre than bottled liquid, and its sour profile will not suit everyone.

If those trade-offs sound acceptable, Red Sour Raspberry is a solid choice for a tart fruit flavour. If they do not, one of the alternatives above will probably suit you better, and it is worth taking a few minutes to work out which before you buy.