Sauna Ergonomic Back Rest (Set 2/2)Need 3 Ergonomic back supports? View our Ergonomic 3 pack Relax against this beautifully crafted Dynamic Canadian Hemlock S Shaped ergonomic backrest, the ultimate accessory to your Dynamic Infrared Sauna! The S Shaped ergonomic backrest is designed to rest up against the Dynamic carbon heating panels at a slight angle and should only be used to complement Dynamic saunas. The backrest is not intended for sitting or standing on, has a weight capacity