<b>2 Sizes and 5 colors for choose</b> <br>The Sigmat Memory Foam Cushion is designed to provide therapeutic comfort for sitting, even for prolonged periods of time. <br>The Cushion helps maintain proper posture and provide stability while seated. <br>Comfortable Contoured Foam: The foam cushion is durable, retaining its shape for extensive use. The ultra-soft, removable cover is machine washable for added convenience.