Premium Memory Foam & Firm Support: Ergonomic contour mold uses premium memory foam, slow bounce, enough softness but supportive back pillow and never squash, a properly firm lumbar pillow can hug your waist and provide a comfortable experience for your back.Ergonomic Back Support: The ergonomic curvature design provides lumbar support for office chairs, which is beneficial to support the upper, middle and lower back while maintaining a good posture when sitting or driving for a long time.Adjustable and Stable Straps: Two adjustable straps with flexible buckles can prevent the lumbar pillow from sliding down in many ways. Unlike other lumbar pillows with single strap or no strap, you can still adjust to the most comfortable height. The maximum length can reach about 145 cm, which makes this backrest suitable for most chairs, such as car seats, office chairs, armchairs and sofas, etc.Extraordinary Anti-wrinkle Blanket and Perfect Gift: This skin-friendly duvet cover is absolutely smooth and wrinkle-free, and it is also breathable, machine washable and anti-static, making you feel comfortable all day long. Our lumbar support is suitable for most customers, such as drivers, businessmen, during pregnancy, the elderly, etc. Recommended as an ideal gift for your friends or family.Universal Fit for Chairs: The lumbar cushion measures 43x40x11 cm. Our lumbar support fits most running chairs perfectly. However, it may not fit some small car seats. Please check the size of the product before purchasing. * When using the backrest cushion in a car with a side airbag (SAB), please do not fasten the straps so that the airbag can deploy normally.