Made of basswood, it has moderate hardness, high air-dry density, oil and grease composition, wear-resistant and corrosion-resistant. Intercellular structure is uniform and dense, mild wood, not easy to crack and deformation, fine wood grain, easy to process, strong toughness. This kind of wood also has fine and even texture and fuzzy straight lines, which makes the sauna room more aesthetic. Combined with far-infrared heating technology, it penetrates deep into the skin, promotes blood circulation, relieves fatigue, and brings you the enjoyment of health and relaxation. Simple design, can accommodate up to 4 people, share the fun of sauna with your friends.