Beautifully designed and easy to maintain, these wood-fired hot tubs are a sleek addition to any property. The Tubmarine heats up in under two hours, requires no electricity, and is built using eco-friendly, high specification parts and materials. Each tub has an in-house manufactured water heater and is outfitted with Kebony timber from Norway. The tub can fit up to four adults comfortably, includes a set of matching wood step stairs, and comes with a 10-year guarantee.