Car Seat Cushion with Strap - Thick 3 Inch Auto Wedge | Memory Foam | Coccyx Support for Back, Hip, Leg Pain | For Drivers, Office Chairs, Wheelchairs | Breathable, Washable Cover NO MORE ACHING BACK: U-shaped gently sloped portable orthopedic wedge tilts pelvis to improve posture and relieve pressure on lower spine during long automotive rides and in wheelchairs and other chairs. Ergonomic coccyx cutout reduces tailbone pain and sciatica. EXCLUSIVE NO-FLATTEN DESIGN: Made from ventilated, breathable mesh material with our Clever memory foam molded core, it will not lose its shape like other brands. NOTE: the car seat cushion will arrive folded but will flatten out with first use. SUPPORTIVE: At 3 inches high (at the back, 2 inches at the front), our car seat cushion gives a bit of a lift and the perfect amount of lumbar support without awkwardly elevating your position during travel. Your best auto booster pad. Removable gray cover is hand washable. STAYS IN PLACE: Adjustable strap with buckle goes around back of car or truck seat to keep cushion stable and secure. Will not slide around whilst driving or require readjustment. Comes with a handy carry bag for easy portability. JUST THE RIGHT WIDTH: Delivers ample, comfortable support. Narrow enough to fit into the center of most car seats without buckling or bunching. Size in inches: 18 front x 16 back x 15 side x 2 x high (at front) and 3 high (at back). NOTE: initially the car cushion may have a strong scent, due to the high quality foam used, but this will dissipate after 48 hours.