This ergonomic S-shape backrest made from Canadian Premium Hemlock(the traditional wood of choice in saunas.) ensures a comfortable and healthy back posture during the sauna. No stains, non-toxic and wear-resistant, high temperature resistant. This curved backrest is elegant and comfortable fitting any sauna room. The stylish addition in your sauna/infrared sauna relieves your back muscles and reliably prevents unnatural posture.Loading capacity 300 lbs. Keep your back away from your sauna's infrared heaters. It gives you the safest and most relaxing way to enjoy the infrared sauna.This backrest basically is for sauna room special backrest, but also can be put on sofa form a complete set to use. The hollow mesh design of the backrest can also play the massage effect at any time in the human body, so that the human body can achieve a relaxed and comfortable state No assembly needed, Overall Dimension: 20.47"(W) x 12.99"(D) x 2.56"(H).We provide a one-year warranty for our products.