Cold Tub 100 Black

Solo cold plunge, darker contemporary finish

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£2,195 inc VAT
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Product information

Small enough to use daily, built to last through every season. Cold Tub 100 gives a single person a proper 91cm round Thermowood plunge, heat treated timber resisting moisture and decay outdoors year round. Pairs naturally with a sauna for contrast therapy, or stands alone as a daily recovery habit. A sensible first step into cold water therapy that tends to get used far more than expected. The Black Edition gives the Thermowood exterior a darker, contemporary finish.

Heat Treated Thermowood

Heat Treated Thermowood

Built for Every Season

Built for Every Season

Everything You Need to Install

Everything You Need to Install

Designed for Fast Heat-Up

Designed for Fast Heat-Up

Specifications

  • Shape: Round
  • Diameter: 91 cm
  • Max Height: 105 cm
  • Wall Thickness: 19 mm
  • Material: Thermowood
  • Assembly: Self-assembly
  • Insulated: No
  • Design Note: Round cold plunge tub

Designed around your ritual

Full Moon Back Window

Full Moon Back Window

Bring the outdoors in. A full circular rear window fills the sauna with natural light and opens up wider scenic views.
Half Moon Back Window

Half Moon Back Window

Privacy meets natural light. A half-moon rear window creates a softer, brighter feel while keeping more enclosed wall space.
Full Glass Front Barrel

Full Glass Front Barrel

Turn every session outward. Full front glazing opens the barrel sauna to natural light and uninterrupted outdoor views.
Full Glass Front Cube

Full Glass Front Cube

Modern design, open views. Full-height front glazing creates a brighter, cleaner space with a sharper architectural finish.
LED Lighting Kits

LED Lighting Kits

Set the perfect mood. Integrated LED lighting creates warmth and atmosphere, transforming the sauna experience day or night
Bluetooth Speakers

Bluetooth Speakers

Soundtrack your downtime. Built-in Bluetooth speakers bring music, podcasts, and guided sessions straight into your sauna.
Quality Accessories

Quality Accessories

Complete the experience properly. Practical finishing touches that improve comfort, convenience, and the overall sauna ritual.
Premium Thermowood

Premium Thermowood

Built to age beautifully. Thermowood offers a richer finish, stronger durability, and better long-term performance.
Cold water immersion has moved from a niche practice to a genuinely mainstream wellness routine, and the physiological effects are increasingly well documented. Cold exposure triggers a sharp constriction of blood vessels near the skin's surface, followed by a rebound dilation once you warm back up, and many regular users report this cycle leaves them feeling more alert and energised than before the plunge. Athletes in particular use cold water immersion to help manage exercise-induced muscle soreness and support recovery between training sessions.

Beyond the physical effects, regular cold exposure is widely reported to build genuine mental resilience. The deliberate discomfort of stepping into cold water, and choosing to stay rather than immediately climbing out, is something many practitioners describe as training a kind of mental discipline that carries over into other areas of life. This is part of why cold water therapy has become popular well beyond athletic circles, with many people using it purely for the mental and mood benefits rather than physical training recovery.

For a single person tub like this one, the routine becomes genuinely easy to build into daily life, no scheduling around others, no waiting for a larger tub to be free. A compact cold plunge that's simply there, ready, and quick to step into removes much of the friction that otherwise causes cold exposure routines to fizzle out after the initial enthusiasm fades. Consistency is what delivers the most noticeable benefits, whether that's physical recovery or the mental discipline many users value just as highly.
Delivered flat packed for self-assembly, with free UK mainland delivery on qualifying orders. At this compact size, assembly is straightforward and typically completed in a few hours by most competent DIYers. Needs a solid, level base and clear access. Professional installation is available as an optional upgrade if preferred; see our Self Assembly Guide for tools and preparation.
Thermowood cold plunge tubs are straightforward to maintain, but a few habits keep the water and timber in good condition. Drain and refresh the water regularly, the exact frequency depends on usage frequency and whether you're treating the water, but stagnant water left for extended periods will develop algae and odour faster in warmer months. Give the interior a wipe down or light scrub periodically, particularly along the waterline where mineral deposits and residue tend to build up.

After draining, let the tub dry out fully between fills if it's going unused for any length of time, which helps prevent mould forming on the timber surfaces. Check the wall thickness and joints periodically for any signs of leaking, though Thermowood's dimensional stability means this is less of an issue than with untreated timber.

Externally, Thermowood doesn't need the same regular re-treatment that standard spruce requires, since the heat treatment process itself improves the timber's natural resistance to weathering. That said, an occasional check for any surface greying or wear is worth doing, and a light oil treatment every couple of years can help maintain its appearance if you want to keep the colour looking fresh rather than allowing it to weather naturally to a silvery grey, which many owners find equally attractive.
This tub comes with a 5 year warranty for residential use and 2 years for commercial use, covering structural timber and hardware. Valid claims are assessed case by case, and we'll supply replacement parts wherever possible rather than the whole tub.
Production takes 2-4 weeks, plus 1-2 weeks dispatch time for pallet haulage. This tub is delivered flat packed unless otherwise stated. Free UK mainland shipping applies to orders over £500 covering up to one double pallet (2.4m x 1.2m x 2.2m) or two single pallets (1.2m x 1.2m x 2.2m). If your order exceeds this due to length, weight, or quantity, additional pallet charges may apply and are quoted separately based on postcode. Please have a solid base, clear access, and suitable unloading space ready before delivery. Pallet deliveries are kerbside only, and you're responsible for moving goods onto your property.
Health Benefits
Assembly & Installation
Delivered flat packed for self-assembly, with free UK mainland delivery on qualifying orders. At this compact size, assembly is straightforward and typically completed in a few hours by most competent DIYers. Needs a solid, level base and clear access. Professional installation is available as an optional upgrade if preferred; see our Self Assembly Guide for tools and preparation.
Cleaning & Care
Thermowood cold plunge tubs are straightforward to maintain, but a few habits keep the water and timber in good condition. Drain and refresh the water regularly, the exact frequency depends on usage frequency and whether you're treating the water, but stagnant water left for extended periods will develop algae and odour faster in warmer months. Give the interior a wipe down or light scrub periodically, particularly along the waterline where mineral deposits and residue tend to build up.

After draining, let the tub dry out fully between fills if it's going unused for any length of time, which helps prevent mould forming on the timber surfaces. Check the wall thickness and joints periodically for any signs of leaking, though Thermowood's dimensional stability means this is less of an issue than with untreated timber.

Externally, Thermowood doesn't need the same regular re-treatment that standard spruce requires, since the heat treatment process itself improves the timber's natural resistance to weathering. That said, an occasional check for any surface greying or wear is worth doing, and a light oil treatment every couple of years can help maintain its appearance if you want to keep the colour looking fresh rather than allowing it to weather naturally to a silvery grey, which many owners find equally attractive.
Warranty
This tub comes with a 5 year warranty for residential use and 2 years for commercial use, covering structural timber and hardware. Valid claims are assessed case by case, and we'll supply replacement parts wherever possible rather than the whole tub.
Delivery
Production takes 2-4 weeks, plus 1-2 weeks dispatch time for pallet haulage. This tub is delivered flat packed unless otherwise stated. Free UK mainland shipping applies to orders over £500 covering up to one double pallet (2.4m x 1.2m x 2.2m) or two single pallets (1.2m x 1.2m x 2.2m). If your order exceeds this due to length, weight, or quantity, additional pallet charges may apply and are quoted separately based on postcode. Please have a solid base, clear access, and suitable unloading space ready before delivery. Pallet deliveries are kerbside only, and you're responsible for moving goods onto your property.

A daily cold plunge built for one

Cold Tub 100 is built as a compact round plunge tub, 91 centimetres across and 105 centimetres deep, sized for a single person session rather than group use. Thermowood construction means the timber has been heat treated rather than chemically treated to resist moisture and decay, an important property for any vessel that will be holding cold water outdoors through every UK season, from a mild autumn morning to genuine winter cold when the discipline of daily cold exposure tends to matter most.

The round shape and modest footprint make it one of the easier cold plunge options to fit into an existing garden layout, whether that is alongside a sauna for proper contrast therapy or as a standalone recovery tool used in its own right. Cold water immersion has become a familiar part of many people's wellness routines, valued for the way it can support recovery after exercise and for the mental discipline that comes with regular use, and a compact tub like this lowers the barrier to making it a daily habit rather than an occasional one reserved for special effort.

Cold Tub 100 suits anyone starting out with cold water therapy who wants a properly built, durable tub without committing to a larger installation or a significant garden footprint. It is a sensible first step into regular cold exposure, the kind of tub that tends to get used far more often than people initially expect once it is simply there, ready, and easy to step into. The Black Edition gives the Thermowood exterior a darker, contemporary finish.
Free Mainland UK Delivery Weather Resistant Thermowood Consistent Warmth Year Warranty Year-Round Use Heats Up Fast
Free Mainland UK Delivery Weather Resistant Thermowood Consistent Warmth Year Warranty Year-Round Use Heats Up Fast
Free Mainland UK Delivery Weather Resistant Thermowood Consistent Warmth Year Warranty Year-Round Use Heats Up Fast
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Built for the daily habit, not novelty

A compact round cold plunge built for one, ready whenever the routine calls for it. Thermowood construction handles year-round outdoor use, sized for daily personal recovery rather than shared social soaking.

Compact enough for any garden or patio

Built for the daily habit, not the occasional novelty. This single-person cold tub fits easily into a smaller garden or patio, with Thermowood's natural resistance to weathering built in.

Genuinely easy to use every day

For anyone serious about cold water therapy, a tub that's genuinely easy to use every day matters more than size. Compact, durable Thermowood construction, sized for solo recovery sessions.

Simple, durable, sized for solo recovery

Simple, durable, and sized for one. This round cold plunge tub suits athletes, regular cold water practitioners, or anyone building the daily discipline of consistent cold exposure at home.

What our customers say

Don't just take our word for it

"The Cascina feels solid and well made. The aluminium frame has a clean finish, the roof panels sit neatly, and the whole structure gives the garden a much more complete look."

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Olivia

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"The Nobile has a really premium feel. The frame colour looks sharp, the materials feel durable, and the finished veranda has a clean modern appearance."

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James

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"The Cascina suits the house perfectly. What stood out most was the sturdy frame, neat roof finish and how well the design works with the garden."

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Charlotte

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"The Fiano Glass Doors feel smooth, sturdy and well finished. They keep the space bright and open while adding extra comfort when the weather turns cooler."

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Create your recovery setup

1

Choose the cold tub shape, finish and setup that suits your recovery routine.

2

Place your order and we confirm the details before preparing your tub.

3

Set it up at home and build cold water into your weekly routine.

BUILD MY RECOVERY ZONE

Frequently Asked Questions

Without a chiller, tub temperature follows ambient conditions and your water source, typically reaching genuinely cold but not consistently icy temperatures depending on the season and time of day.

Shape comes down to personal preference and available space rather than performance; a round profile like this one suits a corner spot or compact patio area equally well.

Many regular users plunge daily or near-daily as part of a training or recovery routine, though frequency depends on individual goals and tolerance, and should be built up gradually.

Thermowood is heat-treated to be more dimensionally stable and resistant to rot than untreated timber, making it well suited to a tub that holds water outdoors year-round.

Yes, cold water therapy is commonly practised year-round, including winter, though anyone new to cold exposure should build up gradually and be aware of the physical effects of very cold water.

5-Year Guarantee

5-Year Guarantee

Built for years of wellness and relaxation

Free UK Mainland Delivery

Free UK Mainland Delivery

Free delivery throughout England, Wales, and Scotland.

Expert Help, When You Need It

Expert Help, When You Need It

Friendly specialist support before and after your purchase. Schedule a virtual appointment.

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