Camouflage Simple Mesh Breathable Memory Foam Lumbar Back Support Cushion Size: 34 * 34 * 12 cm / 13.4 * 13.4 * 4.7 inch Material: Mesh Fibers + Memory Foam The Lumbar back support cushion cover can be removed to clean The lumbar support cushion cover is mesh fibers breathable,antibacterial This lumbar support cushion with a lock, you can adjust the size