Extended periods of sitting put pressure on the pelvis, tailbone, and lower back. This memory foam seat cushion uses a contoured design to reduce that pressure, distributing weight more evenly across the seat. At 3.9 inches thick at its deepest point, the cushion supports the coccyx, spine, and hipbones, making it suited for use in office chairs, cars, wheelchairs, or any seat where sitting for long stretches is common. The cover is removable and washable for easy care.