Aura Bar Twist 40K Vape Kit Rainbow/Prime Special

Overview

The Aura Bar Twist 40K Vape Kit Rainbow/Prime Special by Crystal Prime delivers up to 40,000 puffs in Rainbow/Prime Special at 10mg and 20mg. Free UK delivery over £20, same-day dispatch on weekday orders before 4pm.

Aura Bar Twist 40K Vape Kit Rainbow/Prime Special: the full picture

Aura Bar Twist 40K Vape Kit Rainbow/Prime Special is Crystal Prime's dual flavour big puff kit, priced at £12.99 and rated at 40,000 puffs. The two flavours named in the title, Rainbow and Prime Special, are both carried by the device, which is what the Twist part of the name refers to. It is sold as a prefilled kit, meaning the e-liquid comes supplied with it rather than being something you buy and pour in yourself.

Two nicotine strengths are offered, 10mg and 20mg, and you choose between them when you order. That choice is the single most consequential decision on this page and it gets a section of its own further down.

Crystal Prime has become one of the larger names on this site, with over 250 lines listed under the brand, and the Aura Bar range is where most of its recent attention has gone. The Crystal Prime collection shows the full spread, from the smaller Aura Bar kits through to the high rated devices like this one.

What makes the Twist worth a second look is not the puff number on its own, which every brand competes on now. It is the fact that one purchase gives you two distinct flavours to move between, which addresses the most common complaint about high capacity devices: getting bored of a flavour long before the device is finished with it.

Rainbow and Prime Special: what the two sides actually taste like

Rainbow is a flavour name with a long history in UK vaping and it means what you would hope. It is the sweet shop profile, a mixed fruit candy blend where no single fruit is meant to dominate. Think of the taste of a bag of chewy fruit sweets rather than any identifiable piece of fruit, with a rounded sugary body and a slightly artificial brightness that is entirely the point. It is a crowd pleasing profile and one of the reasons it appears in nearly every brand's range.

Prime Special sits in different territory. Named after the energy and sports drink style that has dominated flavour trends over the last few years, it leans into the cold, sharp, faintly tropical character that made those drinks distinctive. It is less sugary than Rainbow and more refreshing, with the cooling edge doing a lot of the work.

The reason the pairing works is contrast rather than similarity. Two sweet fruit flavours in one device would be a waste of the format, because you would tire of both at the same rate. Putting a soft candy profile next to a cold sharp one means that when one starts to feel heavy, the other genuinely resets your palate. That is the practical argument for a two flavour device, and it is a real one over the lifespan of something rated this high.

The alternative pairing in the Twist range is Slapple and Black Mamba, which puts a sour apple against a darker berry blend. If sweet candy is not your thing, that is the version to look at instead.

What a 40,000 puff rating does and does not tell you

Puff ratings have inflated dramatically over the last few years and it is worth being straight about what the number means. A rating of 40,000 is a manufacturer estimate based on short, consistent draws under test conditions. Real use is neither short nor consistent, so treat the figure as a relative indicator rather than a promise.

What it is genuinely useful for is comparison. A device rated at 40,000 will last substantially longer than one rated at 10,000 used the same way by the same person, and that ratio holds even though neither will hit its exact number in practice. Longer draws, warmer settings and more frequent use all pull the real figure down, and they pull it down for every device equally.

There is a regulatory point worth understanding too. UK rules cap any single prefilled pod or tank at 2ml, and no device sold legally here contains one enormous reservoir of liquid. High ratings are achieved across multiple fills or multiple prefilled sections rather than in one go, which is why a 40,000 puff kit is physically the size it is rather than the size of a drinks can.

The honest way to use the number is as a budgeting tool. If you know roughly how long a 10,000 puff device lasts you, a device rated four times higher will last you roughly four times as long, whatever the absolute figures turn out to be. For a view of the tier just below this one, the 30,000 puff kits make a useful comparison point.

Choosing between 10mg and 20mg

This kit is available in two strengths and you cannot change your mind after ordering, so it is worth a minute of thought. 20mg per ml is the UK legal maximum, and 10mg is half of it.

The rough guidance most people find useful goes like this. If you are coming from a heavy smoking habit and you want each draw to feel substantial, 20mg is the usual starting point. If you have been vaping for a while, or if you were a lighter smoker, 10mg is generally more comfortable and it is the strength people tend to migrate towards over time rather than away from.

The thing that catches people out is the interaction between strength and device output. A high output big puff kit delivers a lot of vapour per draw, and vapour carries nicotine, so the same 20mg liquid can feel considerably sharper here than it did in a small pod device. If your previous experience of 20mg was in a compact refillable, do not assume it will feel identical.

Signs you have picked too high: a scratchy or burning sensation in the throat, coughing on the first draws of the day, or feeling slightly light headed after a long session. Signs you have picked too low: constant drawing without ever feeling settled, and getting through the device far faster than expected. Neither is dangerous to notice and correct, and the correction is simply to order the other strength next time.

£12.99 in context, and the maths against the old way of buying

Twelve pounds ninety nine for a vape device sounds like a lot if your reference point is a single use bar from a few years ago, and like remarkably little if your reference point is what those bars cost you over a month.

Work it through. A 40,000 puff rating at £12.99 puts the cost at roughly 32p per 1,000 rated puffs, device included. The older generation of small single use bars, rated at 600 puffs and typically priced somewhere between four and six pounds, worked out at something in the region of seven to ten pounds per 1,000. That is not a marginal improvement, it is a different order of magnitude, and it is the entire reason the big puff format took over the UK market so completely.

The other saving is one people forget to count. Every single use bar you bought included a battery, a circuit board and a casing that you threw away in working condition. A kit like this spreads that hardware cost across a vastly larger amount of vaping, so you are paying for liquid and flavour rather than repeatedly paying for electronics.

Worth noting on ordering: UK delivery is free once you pass £20. A single kit at £12.99 falls short, so most people either buy two, or add something else they were going to need. The current vape deals are the sensible place to look when you are making up the difference.

The Aura Bar family: Twist 40K against the 10K

Crystal Prime runs the Aura Bar name across more than one capacity, and the gap between them is worth understanding before you commit.

The Aura Bar 10K sits at £7.99 and covers a single flavour per device. It is the lighter, cheaper entry point, and it comes in a long list of flavours including Aura Bar 10k Vape Kit by Crystal Prime Berry Blaze, Black Mamba and Blue Razz Cherry. If you want to sample a lot of different flavours rather than commit to two, buying several 10K kits is the way to do it.

The Twist 40K costs £5 more and is rated four times higher, which makes it substantially better value per puff. What you give up is flavour variety across purchases, since you are locked into the two the device carries until it is finished. That is precisely why the dual flavour arrangement exists, and it goes a long way to solving the problem, but it is not the same as being able to pick something completely different every week.

A pattern that works well: run the Twist as your everyday device and keep a 10K in a different flavour for variety. For a broader look at the format, the big puff kits section and the closed pod kits cover what else is available at similar ratings.

Habits that decide how long your kit really lasts

Two people can buy identical devices and get noticeably different lifespans out of them. Almost all of that difference comes down to behaviour rather than luck.

Draw length

The biggest single variable. A device rated on short test draws will fall well short of its number if every puff you take is long and hard. Shorter, gentler draws taken more deliberately deliver a similar amount of satisfaction and consume far less.

Charging discipline

Top up before the device is completely flat rather than running it to nothing repeatedly. Charge it somewhere you can see it, not overnight under a pillow, and unplug it once it is done.

Temperature

Heat is the enemy of both the liquid and the battery. A device left on a car dashboard in summer will lose flavour intensity first, particularly on the cooler Prime Special side, and the menthol character is always the first thing to go.

Where you set it down

Leave it standing upright rather than flat whenever it is out of your hand. Devices left lying on their side for long periods are more prone to condensation collecting where you do not want it.

Know when it is finished

A device that tastes flat or slightly harsh even on a full charge has reached the end of its useful life. There is nothing to be gained from persevering past that point, and it spoils the memory of a flavour you probably liked.

Buying it: genuine stock, dispatch and the age requirement

Popular big puff kits attract counterfeits, and Crystal Prime is popular enough to be a target. Copies tend to look convincing in photographs and disappoint in the hand, with muddled flavour and ratings that bear no relation to reality. Everything we list is bought through legitimate UK supply, so what you receive is genuine.

Orders confirmed before 4pm on a working day are packed and dispatched the same day. UK delivery is free once your basket goes above £20, and a standard rate applies below that, shown clearly at checkout before you pay for anything.

Buying is limited to adults of 18 or over. We run age verification against orders and will ask for confirmation where our checks require it before releasing an order. Couriers may also request identification on delivery. We do not supply anyone under 18 in any circumstances.

If you are choosing between this and the other Twist pairing, the deciding question is simple: do you want two sweet leaning flavours with a cold contrast, or a sour and a dark berry? Rainbow and Prime Special is the friendlier combination and the easier one to recommend to somebody buying their first device at this rating. The full vape kits department is there if you would rather compare more widely before deciding.

Browse related ranges

If this is not quite the one, these are the closest places to look.

• Vape Pods (1,412 products)
• 5 for £10 E-Liquids (582 products)
• 20mg E-Liquids (582 products)
• Pod Kits (62 products)
• Nicotine Pouches (12 products)
• New In (211 products)

Or stay with the brand: all Crystal Prime products, 153 in total. Brand familiarity is worth more than it sounds when flavours are hard to judge blind.

Looking after it, and what goes wrong

Most complaints about flavour come down to handling rather than the product.

• Prime before the first draw. Click the pod in and leave it a minute. Drawing on a dry wick is what causes that scorched first hit.
• Keep it cool and upright. Heat thins liquid and pushes it through seals, which is why a hot car is the usual cause of a leak.
• Muted flavour is often you, not it. Palate fatigue is common on a single flavour, and rotating to a second profile resets it.
• Store away from children and pets, and recycle spent hardware rather than binning it loose.

None of that is demanding, and it is the difference between a product that performs to the end and one that disappoints halfway.

Buying this as a first purchase

First time buying this sort of product? The decisions that matter are simpler than the shelf suggests.

1. Format. A prefilled pod is the no-mess option. Bottled e-liquid costs less per millilitre if you do not mind refilling.
2. Strength. This comes in 10mg and 20mg. Heavier former smokers usually start high and step down.
3. Flavour. You are looking at Rainbow/Prime Special. Pick a second from a different family so you have something to rotate to.

Everything else is preference rather than a decision that costs you money. The deals page is the cheapest way to try more than one at a time.

More flavours in this line

Everything else that sits under this name.

• Slapple/Black Mamba

Two on the go beats one, because alternating keeps both tasting fresher.

Delivery, returns and buying with confidence

The buying side is straightforward. Weekday orders placed before 4pm are dispatched the same day, and UK delivery is free once your basket reaches £20.00. Tracked options are shown at checkout.

Consumables cannot be returned once opened, for obvious hygiene reasons. Anything faulty or wrongly sent is our problem to fix, not yours. Age verification applies to every order, and unverified orders are refunded rather than sent.

Nicotine is addictive. These products are for adult smokers and vapers.

Building a rotation instead of buying one thing

Nearly everyone who vapes daily ends up running two or three flavours rather than one, and there is a reason for it. Palate fatigue sets in faster than people expect. A profile you loved on day one can taste flat by day ten, not because the product changed but because your palate stopped noticing it.

Rotation solves it entirely. Keep two profiles from genuinely different families on the go, and alternate between them. Something sweet paired with something sharp, or a fruit paired with a menthol, resets the palate each time you switch. Two flavours in rotation will each last noticeably longer than either would alone.

Sensible pairings from the same line:

• Slapple/Black Mamba

Multibuy offers make this cheap to do, and they can be mixed across flavours.

Common problems and how to avoid them

The same handful of issues account for nearly every complaint.

A burnt taste on a new device. Almost always a pod drawn on too soon. Click it in and leave it a minute before the first pull. A scorched wick cannot be rescued, so the minute is worth it.

Leaking. Usually heat or pressure. Warmth thins liquid and pushes it through seals, so a hot car or a sunny windowsill is the usual culprit. Cabin pressure on a flight does the same thing, which is why storing spares upright in a bag beats loose in a pocket.

Flavour fading. Frequently the palate rather than the product. If a flavour dulls after a week, switching to a contrasting profile for a day or two usually brings it back sharply.

Buying the wrong fitment. Pods are not universal, and even within one brand the families differ. Check the listing names your device before ordering rather than after. Spares and accessories are grouped separately if you need a replacement part.

A quick glossary for this category

If any of the jargon here is unfamiliar, this covers the terms that matter.

• Nic salt, or nicotine salt, feels smoother than freebase nicotine at the same figure, which is why bar-style liquids give a gentler throat hit.

Understanding those terms is most of what separates a confident purchase from a guess.