FeaturesKensington Memory Foam Seat Cushion Black K55805WWHigh density memory foamErgonomic design promoting healthy posture and improved circulationIndependently tested for durabilityRemovable, machine washable coverThis ergonomic Kensington Memory Foam Seat Cushion has been designed for added support and comfort during long periods of sitting. The high-density memory foam helps to provide structural support and it has been independently tested, confirming its ability to provide support and maintain thickness beyond 80,000 uses. Designed to help promote healthy posture, improve circulation and provide tailbone and lower back support, it has an anti-slip backing and a carrying strap for easy transportation.