TOLHYUN Sauna Backrest, Wooden Slip-Resistant S-Shape

Finnish benches are flat boards against a flat wall, which is fine for ten minutes and less so by the third round. A loose backrest fixes that without changing the sauna itself. This one is an S-shaped pine frame with round crossbars, 19.7 × 15.7 in (50 × 40 cm), that leans between the bench and the wall; pads wrapped around the four corners keep it from sliding.

The listing is written mostly with infrared cabins in mind, where the maker says the frame keeps your back off the heater panels. In a traditional sauna it does the simpler job of a comfortable lean. At 1.7 lb (0.77 kg) it moves easily between the upper and lower bench. The listing states no finish and no load rating.

Tip: Drape your towel over the backrest as well as the bench – in a Finnish sauna, bare skin sits on cloth, not on wood.