The Baltic Cold Plunge therapy tub can be used with our electric chiller unit or you can keep the water cold by adding ice into the water as needed. This Canadian made cold therapy barrel completes the saunas in our Canadian Timber Collection made with Eastern White Cedar and is shipped assembled and ready to use. The tub is made with a plastic HDPE liner and stainless steel bands on the outside and will hold 150 gallons (570litres) of water, upgrade the cold tub with our optional accessories.