** After Christmas Sale ** for Comfy Cush orthopedic seat cushion, designed in the lab using 5 molds, is engineered to relieve lower back pain. It truly is comfortable... check our reviews., Is it a car seat cushion? Yes. The 100% memory foam cushion is 3.5" thick and doesn't flatten. It's not too soft, nor too hard. It's often used to raise drivers height. It allows you to remain seated in total comfort, Is it a wheelchair cushion? Yes. This wheelchair friendly medical aid gives pelvic & hip pain relief. Plus relieves stress on lower back, spine & tailbone It's also anti-bacterial and anti-fungal., Is it an office chair cushion? Yes, it's designed to help keep your back in an upright position - it stops slouching and adapts to the contour of your body. Plus the removable soft velour cover zips off for machine washing, Is it a coccyx cushion? Yes. The memory foam absorbs and distributes weight evenly. This high density memory foam was originally designed to relieve G-force during lift-off. It's also a great pregnancy cushion.