BookishBunny 2pc Memory Foam Seat Chair Waist Lumbar Back Support Cushion Pillow Car Office Home (Gray) Ergonomic design for promoting healthy posture, proper spine alignment, and superior comfort. Reduces pressure while sitting. Reduces pressure on the coccyx, tailbone and hip bones while sitting. Reacts fast to provide instant relief and comfort. Relieves back aches and pains and even helps with Sciatica. You can use this seat support cushion set in the office, at home, or on the go. Use it on office chairs, car seats, wheelchairs, kitchen chairs, lounge chairs, vehicles, and etc. Memory foam filling for retaining shape and promoting healthy spine alignment.Memory foam provides the perfect amount of cushion and support while retaining it&#039;s shape and form. Removable zippered washable velvet cover is machine washable and allows for easy cleaning. Seat Support Pillow measurements: 17.7x14.1x2.76inch (L x W x H) Back Cushion measurements: 12.6 x12.2 x3inch (L x W x H)