Description: Hard seating surfaces leads to pressure points in your lower body, but with our chair pillow, it cradles your bottom, reducing pain in your lower back, hips, and sciatic nerve, let you work in comfort. Our office chair cushion is designed with an ergonomic shaped, relieving pressure, improving posture. The thermo-sensitive high density memory foam cushion uses your body heat to adapt to your curves, providing your current chair with the support it lacks, and giving you a personalized seat for maximum comfort while using. It measures 15.7x15.7inch, which fits all types of chairs around you, suitable for use at home, in the office or car, or on the go. Our seat cushion has a breathable cover that doesn't trap heat, so you can still feel comfortable and cool even after a long time sit. Specification: Material: polyester fiber Style: modern and simple Size: 40x40cm/15.7x15.7inch Filling Material: memory foam Feature: Detachable, ergonomic, breathable Package Includes: 1 Piece Seat Cushion Note: Please allow slightly 0-1cm difference due to manual measurement. Colors can appear different depending on light and how the listing is viewed. Thanks for your understanding and attention. Wish you a pleasant shopping experience!