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A Range From 3°C To 40°C, Not A Fixed Temperature Tub

A Range From 3°C To 40°C, Not A Fixed Temperature Tub

Many home cold plunge tubs offer a single fixed temperature, limiting their use to cold exposure alone. Monk's Cocoon is built to flex across both cold and heat, turning one tub into a genuinely dual-purpose therapy system.

A genuine temperature range for cold and heat

Cocoon operates across 37°F to 104°F (roughly 3°C to 40°C) — covering both ice-cold plunge therapy and soothing heat, rather than being limited to cold exposure alone.

No plumbing required for setup

Cocoon uses a "plug and plunge" system that requires no plumbing — just connect, fill, and use, with the brand stating it goes from unboxing to first plunge in minutes rather than hours.

An ergonomic, reclined interior for genuine comfort

The tub's interior is specifically designed with a reclined, ergonomic shape that supports the body in comfort — rather than a generic tub shape that leaves users sitting awkwardly during a session.

Built-in self-cleaning filtration

Cocoon includes ozone filtration that keeps the water clean between uses — reducing the need for frequent manual draining and cleaning that comes with basic inflatable alternatives.

App-connected tracking across physical and mental metrics

The companion Monk app tracks plunge frequency, duration, and time, and also lets users self-report mental health metrics like motivation, focus, and stress before and after each session — genuine data tracking beyond just the physical side of cold exposure.

Integration with over 40 wearable devices

The Monk app connects with wearables including Whoop, Oura, Garmin, and Fitbit — letting users see real-time health indicators like heart rate and HRV alongside their cold plunge data, rather than tracking plunges in isolation.

Guided programmes for structured progress

The app includes a signature acclimatisation programme that guides users from 10°C down to 3°C safely over time — a structured approach for beginners rather than throwing new users straight into the coldest setting.

Backed by a 2-year warranty

The Cocoon tub and Monk chillers come with a 2-year warranty — a concrete assurance of build quality for a product intended for frequent daily use.

Suitable for both indoor and outdoor placement

Cocoon is built for indoor serenity and outdoor resilience, with insulation designed to handle both settings — genuine flexibility in where the tub can be placed within a home.

At a Glance

Who It Suits

This product suits anyone wanting a genuinely flexible home cold and hot therapy system, with structured app guidance for building up cold tolerance safely over time. Anyone specifically focused on consistent deep-cold plunging rather than heat therapy should pair Cocoon with Monk's dedicated cold-only Shiver chiller, which cools the tub to 3°C and holds it there. Shop the Monk Cocoon — **

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