The curved back can support your back well The curved back can support your back well, and the thick cushion soothes your hip muscles for a more comfortable and relaxed sitting Soft foam and Steel Spring in the seat Soft foam and Steel Spring inner filler provides excellent cushioning for extended sitting. A swivel seat that can be rotated 360 degrees The structure of the entire chair is made of high-quality rubber wood, the joints are tightly linked, very strong and stable, and can bear up to 300 lbs