Kensington Memory Foam Seat CushionKensington Memory Foam Seat Cushion For added support and comfort during extended periods of sitting, Kensington created this ergonomic seat cushion. The independent testing of the high density memory foam, which has been used to help provide structural support, has confirmed its capacity to offer support and maintain thickness for more than 80,000 uses. It is intended to assist encourage good posture, increase circulation, and support the tailbone