Crydip XXL Inflatable Cold Plunge Review: Drop-Stitch Comfort, No Chiller

The Crydip XXL is a decent inflatable cold plunge that's let down by its own marketing. The 8cm drop-stitch walls, 110 degree reclining backrest and insulated lid put it above the folding barrel tubs most people start with, and £307.47 is fair for that spec. But the "200 gallon" capacity is not a fill volume you'll ever see, there's no chiller included, and Crydip is a brand with no history to fall back on if the seams let go in year two. We'd call it a qualified buy for tall users and anyone planning a chiller later.

Check the Crydip XXL price on Amazon£307.47

What you're actually buying

Drop-stitch is the same construction used in inflatable paddleboards: thousands of fine threads join the inner and outer skins, so when you pump it up the wall goes rigid and flat rather than bulging like a lilo. Crydip uses it for the full 8cm wall. In practice that means a tub you can lean against without it folding in, and a rim you can push on to climb out, which is the bit cheap inflatables get badly wrong.

The backrest reclines at 110 degrees. That sounds like a spec-sheet detail until you remember that the whole point of a plunge is to sit still in very cold water for a few minutes. Sitting bolt upright in a barrel with your knees at your chest is not comfortable, and a longer oval you can lean back in makes getting your shoulders under far easier.

The rest of the package covers the basics. An insulated lid, insulated walls and base, inlet and outlet ports for an external chiller, and a drain. It deflates and folds to about 15kg, so it can go in a cupboard over summer if you only plunge in winter.

The 200 gallon problem

Here's where we have to be blunt. Multiply out the external dimensions as an oval (155 by 85cm, 74cm tall) and you get roughly 765 litres. That's almost exactly the 757 litres Crydip advertises, which tells you the headline is the size of the whole object, walls and base included.

Take the 8cm off every side and the inside shrinks to something like 139 by 69cm. Allow for the base, then leave enough room that the water doesn't pour over the rim when you get in, and a sensible fill lands somewhere between 350 and 450 litres. Those are our numbers, not Crydip's, and the exact figure depends on how deep you like it. It's still a big tub. It just isn't a 757 litre tub, and if you size a chiller off the listing you'll overspend.

Running it: ice, tap water or a chiller

Volume sets your running costs, so the honest fill figure matters more than anything else on the page.

From November to March, UK tap water usually comes out cold enough that a night with the lid off gets you into useful territory without any ice at all. Summer is a different story. Taking 400 litres of 15°C tap water down to 10°C needs around 22kg of ice by our calculation; chase 5°C and you're looking at 45 to 50kg per session. Even with the insulated lid slowing the warm-up, that's a regular supermarket run if you plunge several times a week.

Which is why the chiller ports exist. We've reviewed the AS ColdPlunge ice bath chiller, and it's a sensible pairing in principle, but it's rated for about 300 litres. A full XXL is past that, so you'd either run it with a shallower fill or accept slower pull-down times on warm days. Either way, budget for the chiller as a second purchase that may cost more than the tub.

How it compares with the tubs we've reviewed

The Lay-Z-Spa Glacial Dip is the cheap, safe pick at around £130 from a brand that's been selling inflatable spas for years. It's smaller and less comfortable to recline in, but it needs much less ice and you know who you're dealing with if something fails.

The Zennest 140 Gal XL is the closer rival. Zennest uses six bonded layers and rigid stands rather than drop-stitch, adds a removable liner that makes water changes quick, and charges more. Both share the same core issue: they're big enough that ice stops being a realistic year-round plan.

Where the Crydip pulls ahead is comfort. Neither of those tubs offers a proper reclining backrest, and the drop-stitch walls should feel more like a solid bath than a soft-sided pool. Where it falls behind is history. Lay-Z-Spa and Zennest have owner reviews going back further; the Crydip listing is new, and that matters with any air-filled product whose weak points (seams and valves) usually show up after months, not days.

If you're still weighing up the whole category, our best ice bath UK guide ranks the options by budget and space.

What the research says about cold water

The recovery case for cold plunging is real but narrower than the marketing suggests. A Cochrane review found cold-water immersion reduced delayed-onset muscle soreness compared with passive rest, though the trials were small and mixed in quality. A 2022 meta-analysis of 52 studies reached a similar place: cold-water immersion helped muscle power, soreness and perceived recovery after high-intensity exercise, with little effect on regaining strength.

Lifters should pay attention to timing. In a 12-week trial, men who took a cold plunge after each strength session gained less muscle and strength than those who did an active cool-down. Keep the tub for rest days or leave several hours after lifting.

Safety comes first, though. NHS ambulance trusts warn that water below 15°C can trigger cold water shock, a gasp reflex with a spike in heart rate and blood pressure. If you have a heart condition or high blood pressure, speak to your GP before you start, ease in rather than dropping straight under, and never plunge alone after a drink. For set points and session lengths, read our guides to ice bath temperature and how long to stay in an ice bath.

Living with it

Inflating a drop-stitch tub takes a high-pressure pump and more effort than a pool, so check the listing for what's in the box before you start. Once it's up, think about where it lives: 400 litres of water weighs about 400kg before you get in, so a ground-floor slab, patio or garage floor is the place for it, not old decking or an upstairs room.

Water hygiene is the other ongoing job. Without a filter running, you'll be draining and refilling more often, so a cover, a quick rinse before you get in and a regular clean go a long way. Our guide on how to clean an ice bath covers the routine.

XXL or XL?

Crydip also sells the smaller XL at around £204.50, and for plenty of people it's the smarter buy. Less water means less ice, a cheaper chiller will cope, and it takes up less of the patio. Go for the XXL if you're tall, you want to recline fully with your shoulders under, or you plan to use it as a hot soak where the extra length earns its keep.

Check the smaller Crydip XL price on Amazon£204.50 See the Crydip XXL on Amazon£307.47

Recommended reads

• Best ice bath UK
• Ice bath temperature: what to aim for
• How long to stay in an ice bath
• How to clean an ice bath
• Zennest Cold Plunge Tub 140 Gal XL review