Comfortable Back Support: Mesh back support with massage granules, provide massage feature, make you feel stinging and can effectively relieve the stiffness of your back/waist Easy Installation: Back rest for office chair is lightweight, easy to carry. Mesh back support with elastic strap, can be installed in minutes, and fix the mesh lumbar support to office chair/car seat Back Support for Office Chair: With the adjustable install belt, this chair back support cushion is very easy to install and suitable for almost all kinds of seats, including car, home, school, office seats, etc Ergonomic Design: Our back support for office chair can keeps your spine in alignment and help to relieve pressure on your spine, lower back while working or relaxing, release back pain and correct position