Ergonomic wedge cushion for car truck pain reliefCar Wedge Seat Cushion for Car Driver Seat Office Chair Wheelchairs Coccyx Support Tailbone Pain Relief Memory Foam Car Seat Cushion. RELIEVE ACHING BACK: Wedge seat cushion that 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,but with some people it will not completely eliminate all symptoms. PROMOTE BETTER SITTING POSTURE : 20 INCHES at the width just fit the car seat, not like other brands with 18 inches at the width are too small for car seat . What's more, 3 INCHES high at the back , our cushion effectively raises your car seat height, thus providing the perfect amount of lumbar support. Widely Use: Our Memory Foam orthopedic wedge seat cushion provides comfort on most Hard Surfaces, office chair, and wheelchairs.Design for car seat,office use, household and pregnancy. Some customers who often makes long commutes said that this car wedge seat cushion made all the difference from feeling achy after a drive to feeling good. MORE PRACTICALITY DESIGN: Non-slip rubber bottom and adjustable strap to keeps cushion stable and secure. Will not slide around whilst driving or require. Use 4D breathable mesh knitting material, has high-density, high- breathable, high elasticity. Removable cover is hand washable. Colour: gray Material: memory foam Size: 20x17x3 in/50X43X8 cm Package Contents: 1 x Car Wedge Seat Cushion NOTE: The car seat cushion will arrive folded but will flatten out with first use. Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.