Features: -Made of 100% premium memory foam, features balanced softness and ergonomic coccyx cut-out design, which designed to relieve pressure on lower spine and reduce tailbone pain -The 20-inch width is just right for a car seat and the 3-inch height at the rear effectively raises the height of your car seat for perfect lumbar support. -Non-slip rubber bottom and adjustable strap to keeps cushion stable and secure. -Use 4D breathable mesh knitting material, has high-density, high- breathable, high elasticity. -Removable cover is hand washable. Specification: Colour: gray Size: 50*43*8cm Material: memory foam Package Included: 1x Car seat cushion .