Kensington Ergonomic Memory Foam Seat Cushion - Foam - Ergonomic Design, Slip Base, Durable, Removable Cover, Adjustable Strap, Comfortable - 1 Each Ergonomic Memory Foam Seat Cushion strikes the perfect balance between comfort and support. It provides an ergonomic design to promote healthy posture, increase circulation and relieve spinal pressure when sitting. High-density memory foam maintains its shape. Anti-slip backing prevents sliding. Removable cover is easy to clean. Carrying strap makes it easy to transport between home, office, car and events.