Features 【High Density Memory Foam Seat Cushion】 Our seat cushion is made from high-density memory foam, providing superior comfort and support. It effectively relieves back pain, tailbone pain, and sciatica, making it suitable for use in office chairs, wheelchairs, airplanes, or cars. It is an excellent choice for both short and long trips. 【Alleviates Back & Hip Pain】 The ergonomic design of our coccyx cushion helps alleviate pressure on the lower back and tailbone, offering orthopedic relief while seated. It promotes healthy posture and proper spinal alignment, reducing back and hip pain caused by prolonged sitting. 【Orthopedic Seat Cushion】 Our cushion features a U-shaped ergonomic design.