About this product [Pain Relief] The lumbar support pillow adopts ergonomic design, filling the gap between the waist and the bed, fitting the lumbar curve, effectively relieving pain caused by the waist, thereby reducing the burden on the back. Multifunctional Lumbar Support Pillow Our memory foam backrest lumbar support pillow can be used in multiple places. Whether used as lumbar support in a car or as back support in a recliner/bed, it provides top-notch comfort at all times. Soft and Breathable The back pad adopts rebound memory foam, which can provide you with long-lasting comfort and achieve the right balance between support and comfort. 4D mesh fabric keeps your back cool and dry. [Recommended by Orthopedic Doctors] Orthopedic doctors recommend the use of ergonomically streamlined high-density memory foam lumbar pillows to relieve waist and hip pain. Memory foam is made of polyurethane, so it can be used by pregnant women and children with confidence. Warm Tips For best appearance and support, please open the package and wait more than 24 hours until fully inflated. In terms of hardness, please note that it will vary depending on the temperature, it will become harder in cold temperatures, but will soften immediately in warm conditions, so this is normal and does not affect use. If you encounter any problems during use, please feel free to contact us and we will provide you with return and exchange services.