The SaunaLife cold plunge tubs on this page are the Soak Series S1 for one person and the S2 for two, each in natural or black thermo-pine. Choose a cold plunge tub for one person or two people, with a thermo-pine wood exterior and a fiberglass basin contoured for the shape of your body. Whether your routine includes workout recovery or relaxation after a sauna session, you can fill your tub with cold or warm water for a cold plunge or a hot immersion.


What is a SaunaLife cold plunge?

The Soak Series is a hot and cold immersion tub that arrives fully assembled. Hand crafted in Northern Europe, it has a shaped fiberglass basin for leaning back. Explore the SaunaLife range, browse all cold plunges or pair your tub with a sauna.

S1 or S2, natural or black?

The round S1 seats one person, measures about 40 inches across and holds 124 gallons. The S2 seats two people in its spacious basin, measures about 74 by 46 inches and holds 200 gallons. Both come in natural or black thermo-pine, with matching wood steps and a drain. For other round wooden tubs, browse the barrel page.

Chiller, cover and base

Fittings come with the tub for a chiller of your own, and our cold plunge chillers keep water cold between plunges. An insulated cover is optional on the page. Foundation beams come with each tub, but you need a firm, level base. A full S1 weighs over half a ton, and a full S2 weighs over three quarters of a ton. For warm water heated by wood, see the SaunaLife wood burning hot tubs.

Why buy from My Cozy Outdoors?

We are an authorized SaunaLife dealer. Every listing carries the full manufacturer warranty. If you need help choosing your size or color, call us and we will talk it through.

Your questions answered

Can I use a SaunaLife tub for both cold plunges and hot soaks?

Yes, fill it with cold water for a plunge after the sauna or warm water for a soak. You only need water to use it, and matching wood steps and a drain come with it. Built-in fittings let you connect your own chiller.

S1 or S2: which SaunaLife cold plunge do I need?

The S1 seats one person, measures about 40 inches across and holds 124 gallons. The S2 seats two people, measures about 74 by 46 inches and holds 200 gallons. Both come in natural or black thermo-pine and need a firm, level base.

Do I need a chiller for a SaunaLife cold plunge?

No, you can fill the tub with cold water and plunge without a chiller. The fittings come with it, but the chiller itself is not in the box. Your own chiller keeps water cold between uses of your SaunaLife cold plunge.