Bookishbunny Memory Foam U Shaped Pillow Neck Support Lumbar Cushion Home Office Car Seat Lumbar Back Support (Black) Made of high quality memory foam Zippered,machine-washable cover Soft and supporting Cushion Size: 12.6" * 12.2" * 3.99" Reacts fast to provide instant relief and comfort. Elastic strap included for chair, car.