As Seen on TV — Comfy Curve™ is perfectly contoured to support your back and spine, ideal for relieving pressure and lower back pain. Made of ultra plush memory foam with a supportive microbead core, it's ergonomically designed to hug the S-curve of your spine.. Removable lumbar insert gives you customized support. Use it while sitting, sleeping or driving. Removable cover is machine wash and dry. 16 ½" X 8 ½" X 4".