The curved back can support your back wellThe curved back can support your back well, and the thick cushion soothes your hip muscles for a more comfortable and relaxed sittingSoft foam and Steel Spring in the seatSoft foam and Steel Spring inner filler provides excellent cushioning for extended sitting.A swivel seat that can be rotated 360 degreesThe 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