The Ohku tub is the world’s first wood-fired concrete hot tub. It is generously comfortable for one, two or a small family of four. Like Japanese ofuro tubs, our soaking tub is meant for complete relaxation and reconnection, leaving you feeling nurtured by nature. The freestanding concrete tub is a low water volume design that ergonomically hugs the body, wrapping you in warmth as you lie back. The concrete finish of the tub feels smooth as silk against your skin, yet is durable enough for any season. It sits atop our beautiful floating cedar wood platform and heats in under an hour. All necessary fittings, including the stainless steel wood-fired heater and floating cedar wood platform are included with each tub, to have you soaking outdoors in no time. Elevate your outdoor space with the Ohku two-person hot tub.