Of course, this seat cushion is very comfortable to use, because it is breathable and comfortable, and it is not stuffy even after sitting for a long time. And the seat cover can be removed for cleaning, easy to use. With an ergonomic design, it can effectively release the pressure on the hips, and the hollow design is given enough cushioning space for the hips. It is not easy to change shape even after a long sitting due to strong elasticity. It can effectively correct the shape of the hips and correct sitting distortions. It is constructed of polyester material. The cushion is 38cm in length, and 33cm in width. Suitable for home cushions, sofa cushions, car cushions, etc. Item Name: Cushion Material: Polyester Features: Easy to Clean, Comfortable, Solid Color, Durable Size Details: 38cm x 33cm or 14.96" x 12.99" (Approx.) Notes: 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. Package Includes: 1 x Sciatica Pillow