Description: Ergonomic Support: This back cushion is designed to provide optimal support for your back and waist when sitting for long periods of time. It is ergonomically designed to conform to the natural curve of your spine, ensuring 3D support and comfortCurved Design: The chair cushion adopts a curved design to provide balanced pressure distribution, supporting and protecting the lumbar curvature by distributing body weight to the lower backPremium Materials: This car seat cushion is made of slow memory foam, providing comfortable and sturdy double layer lumbar supportVelvet Cover: The outer cover is made of soft velvet cloth, providing a delicate touch and extra comfort, suitable for long term use in any environmentAdjustable Elastic Band: This support pillow comes with a high elastic band on the back, which can be easily adjusted to fit a variety of chairs or car seats, providing flexibility and convenience for different seating arrangements Specification: Material: Memory FoamVelvet Cloth Size Chart: 35cmx8cmx42cm/13.78inchx3.15inchx16.54inch Package Includes: 1 Lumbar Support Pillow Note: Please allow slightly errors due to manual measurement and different monitors.