Find your perfect cold therapy device - precision ice baths, chillers and all the accessories you need to get the most out of cold water therapy.
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“Been using this every morning since January.”
Best Sellers
Bundles
Kaldera
Kaldera Plunge 80 + Chill Core 300 + Floating Thermometer, boxed together
4.7 (verified customers)£649.00 (£680.99 value bought separately)
Kaldera Plunge 80
Chill Core 300
Floating Digital ThermometerKaldera
Kaldera Plunge 320 + Chill Core 500 + Thermometer + Tub Care Kit, boxed together
£899.00 (£939.99 value bought separately)
Kaldera Plunge 320
Chill Core 500Floating Digital Thermometer
Tub Care & Water Treatment KitKaldera
Kaldera Plunge 550 XL + Chill Core Pro + Thermometer + Care Kit + Thermal Robe, for daily commercial use
£1,149.00 (£1,238.99 value bought separately)
Kaldera Plunge 550 XL
Chill Core ProFloating Digital Thermometer
Thermal Change RobeTub Care & Water Treatment KitIn the wild
Why Kaldera
4.7/5
Average rating from verified customers
30 days
Full refund on unused items returned within 30 days of delivery
11–15°C
The temperature band used across the recovery research we cite
5–10 days
Typical delivery, shipped from UK & EU warehouses - no customs surprises
Explore the range
Add-ons
Free UK & EU delivery over £100.
Getting started
Set up your tub anywhere with a hose or a few buckets. Flat-pack frame, up in minutes.
Dial in 3–15°C on a Chill Core and let it hold temperature - no ice runs, no guesswork.
Two to five minutes, most days. The insulated lid keeps it cold and ready for tomorrow.
Every health claim on this site links to the peer-reviewed study behind it
The Science
Cold water immersion after hard training can ease the muscle soreness and perceived fatigue that build up over the following days, helping you come back to your next session feeling fresher.
Bleakley et al. 2012, Cochrane Database of Systematic Reviews
A cold plunge triggers a sharp rise in circulating noradrenaline and a jump in alertness. Many people describe the after-effect as a clean, sustained lift in mood and focus.
Šrámek et al. 2000, European Journal of Applied Physiology
Regular cold exposure is associated with a shift toward parasympathetic (“rest and digest”) activity and lower self-reported stress, which for many supports calmer evenings and better sleep.
Buijze et al. 2016, PLOS ONE
The recovery trials pooled in the largest meta-analysis clustered around 11–15°C for 11–15 minutes - and colder or longer wasn't reliably better within that range. You don't need ice-water extremes to match the studied protocols.
Machado et al. 2016, Sports Medicine
In a randomised trial of over 3,000 adults, ending a routine shower with 30–90 seconds of cold water was associated with a 29% reduction in self-reported sickness absence. The trial studied showers, not immersion - a distinction we keep honest.
Buijze et al. 2016, PLOS ONE
The first 30–90 seconds of cold exposure trigger a documented cold shock response - a gasp reflex and a jump in heart rate and blood pressure. Easing in gradually, rather than starting at the coldest setting, is how tolerance is built safely.
Tipton et al. 2017, Experimental Physiology
Cold water immersion is not a medical treatment. Consult a professional if you have cardiovascular conditions.
Real customers
“Been using this every morning since January.”
The insulated lid genuinely keeps it cold overnight with a Chill Core 300 running - water's still at 4°C by the time I get in.
“Fits my husband at 6'2" with room to spare, and the frame…”
Folds down small enough to store behind the shed.
“Cheaper than buying the tub and chiller separately and I…”
Exactly what a first-timer needs.
“Buying the bundle took all the guesswork out of sizing a…”
Arrived together, set up in an afternoon, no compatibility issues.
“Upgraded from a cheaper 200L tub and the difference in…”
“The six heat zones make a real difference - warmer at the…”
Evidence-backed cold water therapy for the UK & EU.
Learn
Before you buy
Delivery is free on orders over £100, across the UK and 20 euro-area countries. Smaller orders carry a flat fee shown at checkout, and typical transit is 5–10 working days.
No. Orders ship from warehouses inside the UK and EU, so your parcel never crosses a customs border and there are no duties or import charges on arrival.
Most items can be returned within 30 days of delivery for a full refund, provided they're unused and in the condition you received them.
Yes. Chillers and the Ember Sauna Blanket carry a 2-year warranty - if one arrives faulty or fails within that period, we arrange a free repair, replacement or refund.
The recovery studies pooled in the largest meta-analysis cluster around 11–15°C. Colder is not reliably better within the studied range, so get into that band and stay comfortable.
Ice is fine for occasional plunges, but a chiller holds a precise set temperature day after day - that consistency is what makes a daily routine sustainable.
Practical, research-led guidance on building a cold habit that lasts - straight to your inbox.
