Car Wedge Cushion for Car Driver, Office Chair, Wheelchairs – Coccyx Support, Tailbone Memory Foam Car Cushion. RELIEVE ACHING BACK: Wedge cushion made of 100% premium memory foam features balanced softness and ergonomic coccyx cut-out design, which is 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 in width fits car seats comfortably, unlike smaller 18-inch models that may be too narrow. With a 3-inch height at the back, this cushion effectively elevates your seating position, providing optimal lumbar support. WIDELY USED: Our memory foam orthopedic wedge cushion offers comfort on hard surfaces, including office chairs and wheelchairs. Designed for use in cars, offices, homes, and during pregnancy. Some customers who frequently drive long distances reported significant improvement in comfort after using this car wedge cushion. PRACTICAL DESIGN: Non-slip rubber bottom and adjustable strap help keep the cushion stable and secure without shifting during use. 4D breathable mesh knitting material offers high density, breathability, and elasticity. Removable cover is hand washable. Color: Gray. Material: Memory foam. Size: 20 x 17 x 3 inches / 50 x 43 x 8 cm. Package Contents: 1 x Car Wedge Cushion. NOTE: The car cushion will arrive folded but will flatten out after initial use. Only the listed items are included; other products are not included. Light and display differences may cause slight color variations between the image and the actual item. Measurement allows an error of +/- 1-3 cm.