Do hard things. Beautifully.
Cold or hot. Morning or night. Your ritual, your rhythm.
Inspired by Japanese soaking rituals, Cocoon delivers cold or contrast therapy with ice, the Shiver chiller, or the mighty dual-temp Shiver Pro.
It settles effortlessly into homes, gardens, studios, and wellness spaces. This is your physical, mental, and emotional reset, disguised as design.
WHAT MAKES COCOON DIFFERENT?
Built for strength and longevity, Cocoon’s reclined, ergonomic interior supports the body in total comfort. Beautiful to look at, even better to plunge in.
One system, two extremes. When paired with our powerful Shiver Pro chiller, Cocoon transitions between ice-cold recovery and soothing heat therapy – perfect for shared homes, or anyone who wants it cold in the morning and hot in the evening.
*Shiver Pro only. The Shiver chiller cools to 3 °C only.
Beneath its seamless shell, Cocoon hides a quietly clever detail: three built-in chiller ports, so you can position your Shiver chiller to the left, right or rear – or place it further away entirely. Cocoon flexes to fit your space and your lifestyle.
At just 71.5cm wide, Cocoon fits effortlessly through standard doorways – yet inside, it’s spacious enough for users up to 6’9”. Designed for full submersion without curling up.
Experience immersive guided plunges with soundscapes, breathwork, and audio coaching. From a gentle 10 °C acclimatisation pathway to anxiety resets, muscle recovery and morning awakenings, Monk supports every stage of your ritual.
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Key features
Cocoon flexes to your space, budget, and ritual.
Use it as a standalone tub and add your own ice, or connect any Monk chiller (and most leading chillers) – Shiver for cold-only plunges down to 3°C, or Shiver Pro for full contrast therapy from 3-40°C.
Ozone is nature’s most powerful purifier – destroying bacteria, algae, and viruses without harsh chemicals. Shiver Pro has ozone and 2-stage filtration, so you have cleaner water, less maintenance and more plunging.
*Shiver Pro only. Shiver comes with inbuilt 1-stage rinsible mesh filter.
Cocoon’s ‘plug and plunge’ system needs no plumbing – just connect, fill, and dive in. From unboxing to first plunge in minutes, not hours.
Our mighty Shiver Pro chiller is built for gyms, wellness studios, and homes alike. Industrial-strength cooling meets sculptural, interior-grade beauty. Engineered for everyday rituals and professional reliability.
A subtly contoured base guides every drop of water toward the drain. Designed for total drainage and simple upkeep – so you can focus on your ritual, not the rinse.
ACCESS AN IMMERSIVE EXPERIENCE
Plunge to guided sessions – breathwork, soundscapes, coaching – built to put you in control. Explore our progressive acclimatisation programme, or 'drop-in' plunges for muscle recovery, morning awakening, anxiety reset, and more.
Each is expertly crafted using evidence based techniques including cognitive behavioural therapy (CBT) and visualisation, to help you rewire, reframe, and experience true transformation.
You can’t manage what you can’t measure. Monk integrates with your wearables, like Whoop, Oura, and many more, so that you can see how cold exposure impacts important health metrics over time, like heart rate, HRV and sleep, all in the Monk dashboard.
Not only can Monk track your quantitative metrics like plunge frequency, time and duration - you can also self report of mental health metrics pre and post plunge.
Track your motivation, focus, happiness, stress and see how cold water therapy impacts your mood.
Your life, your schedule. You can schedule your plunges in advance, and Monk will be at the temperature you want, when you want it. Afternoon triathlon recovery on Wednesdays, and a colder morning wake-up on Thursday? Monk’s got you covered. Plus, you can add it to your calendar for added accountability.
KEY FAQs
Cocoon is 123.5cm (L), 71.5cm (W), 84.5cm (H), designed to fit through standard doorways.
Internally, Cocoon is 60.8cm wide, making it roomy for even the biggest shoulders.
The Shiver or Shiver Pro chiller sits beside or behind the tub depending on your layout:
Monk Shiver:
- Size: 41cm x 29cm x 36cm
- Weight: 21kg
- Cooling capacity: 880W (up to 1250W peak)
- Temp: cools down to: 3°C
Monk Shiver Pro:
- Size:
- Weight:
- Cooling capacity:
- Temp: cools to 3°C, heats to 40°C
We bet you will! Cocoon is engineered for full-body submersion without curling up, and comfortably fits users up to 6’9” (203cm). Equally, more petite users will still feel comfortable.
March 2026. All pre-orders are fulfilled strictly in order of purchase – first come, first served.
It depends on your chiller:
- Shiver (0.3HP): cold-only, down to 3°C.
- Shiver Pro (1HP): hot and cold, 3°C–40°C, perfect for contrast therapy.
Plunge your stress, bad sleep, and fatigue away in 60 days – or your money back.
Simply plunge every other day for a month (30 days total over a 60 day period); log your sessions in the Monk App and record your pre/post plunge metrics. Then experience the transformation!
If you don’t feel like a new you and notice an improvement to your physical or mental health, we’ll give you a full refund.
We suggest choosing based on how you’ll use Cocoon – both options are excellent, just designed for different rituals.
- Shiver (cold-only): Pure simplicity. A powerful cold-only system that cools Cocoon down to 3°C. Perfect if you love consistent deep-cold plunging. Shiver is not suitable for commercial spaces.
- Hot & Cold (Shiver Pro 1HP): The high-performance option. If you want tighter, faster, and more precise temperature control, Shiver Pro is the clear choice. It delivers full-range performance from 3°C–40°C, quick temperature adjustments, and effortless consistency. Ideal for shared homes, higher-frequency use, and anyone who wants the best possible experience.
- Space & placement: Check your available space. The Shiver Pro is larger and can double as a step or seat – ideal for pre-plunge breathwork.
- Commercial ready: Shiver Pro is For high-traffic or commercial settings, the Pro offers faster performance, higher resilience, and best value per session.
- Budget & future-proofing: Starting with the Shiver gives you a strong cold foundation. If you want to upgrade later, you can.
Your Cocoon tub, chosen Shiver or Shiver Pro chiller, connecting hoses and fittings, insulated lid, and a quick-start guide. Everything you need to plug, fill, and plunge.
Cocoon is built for indoor serenity and outdoor resilience. Its hard-shell body and weatherproof components are suitable for gardens, patios, studios, and home interiors.
The Cocoon tub and Monk chillers come with a 2-year warranty. That’s twice the industry standard – when you build something properly, you stand behind it.
Yes. When paired with the Shiver Pro, Cocoon is suitable for boutique studios, wellness spaces, gyms, spas, and clubs with regular daily use. Built for performance, finished for interiors.
Yes, we’ve partnered with Klarna to offer 0% interest finance over 6–36 months, making it easier to bring Cocoon home. T&Cs apply. Not available on the deposits.