1. Gel-Enhanced High-Density Memory Foam: Designed with a cooling gel layer on pure premium memory foam, it provides lasting comfort and support for long periods of sitting. Memory foam is heat-sensitive; as the temperature changes, the hardness of the cushion changes as it fits the body. The unique design of the memory foam allows the cushion to return to its original shape after use. 2. Lower Back Support: Ergonomically designed contoured cushion provides support and comfort for the lower back. Specially designed with a unique U-shaped cutout in the back to enhance comfort by reducing coccyx pressure. Designed to promote healthy posture, this coccyx cushion is perfect for office chairs, wheelchairs, and car seats. 3. Anti-slip bottom: The rubber textured anti-slip bottom helps the cushion stay in place, minimizing movement as you adjust in your seat. 4. Built-in handle: The convenient built-in handle allows you to carry this lightweight cushion. Easily take this memory foam cushion from one place to another, and never sit in an uncomfortable chair again. 5. Easy-to-clean velvet cover: Covered with soft velvet fabric, machine washable. The zipper design allows you to quickly and easily remove the cover for washing. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.