Most Comfortable Memory Foam Seat Cushion On The Market: Unique Comfortable Design - With ergonomics and orthopedic design?allowing you to power through your day. 100% High Quality and Advanced Memory Foam - It helps improve posture and provides support while sitting for extended periods. Soft yet firm, our office chair cushion adapts to the contours of your body to create a truly customized fit. Machine Washable Cover - Easily unzip the cover on the coccyx cushions and toss it into the wash. Machine wash with cold water. HEAT RESPONSIVE TECHNOLOGY Using your body heat our advanced coxyxc cushion molds perfectly to the shape of your bottom, providing ideal support, yet retains its shape after each use. Built-in Handle A durable handle makes the seat cushions portable for travel and commute needs. It is lightweight and can be carried easily. NON-SLIP BOTTOM Its textured bottom stays securely in any seat. Perfect for your office or kitchen chairs, car, truck, wheelchair, computer desk chairs, and couch.