Coisum has been focusing on memory foam knee pillow for many years! We devote ourselves to making a comfortble knee pillow. This is the latest design by us. The knee pillow is made from highest quality 60 density memory foam, uses the 5 seconds return technology to cushion the body and relieve painful pressure points for ultimate relaxation. We've made some upgrades---Latest Foldable & Expandable Design, so you can adjust the using height randomly and release your knee or leg in any positions. It 's also not like the traditional leg pillows that only works for side sleepers, it works for ALL TYPES OF SLEEPERS!