Ergonomic design with a U-shaped cutout suspends your coccyx (tailbone) and prevents it from being compressed. With its contoured design, this cushion improves sitting posture while effectively reducing the pain caused by Coccydynia.This Seat cushion is made of pure memory foam that adapts to your body curves and relieves pressure throughout the day. The ergonomic contour shape offers the desired support that most chairs lack.Made from premium memory foam, the coccyx cushion slowly rebounds and regains its original shape after each use. The cushion provides all-day comfort, and the foam doesn't get flatten even after spending long hours sitting on itThe chair seat cushion has a breathable mesh cover that allows air to flow through and prevents heat from trapping in. This helps you stay cool and allows you to sit comfortably for all day long.