6-Height Adjustable This ergonomic under desk footrest has six heights, which can be adjusted freely according to the height of the table and chair or your height, so your feet don't dangling. Desk foot rest can relieve the pressure on leg, hip and back, and improve posture.Foot Support, No Collapse&Sag A proper foot rest under desk should be firm or like plastic in order to get a correct balance of the body when your feet rest, and play a support role. It won't collapse Sag like ordinary memory foam foot cushion when you use it for a long time.More stable four corner support.Comes with Memory Foam Pad The 2-IN-1 foot rest for under desk at work not only plays a supporting role, but also makes your feet feel soft and comfortable, reduces foot pressure and improves blood circulation.Non Slip Bottom Machine Washable Office footrests has non-slip bottomIt stays in place when you need it. Breathable fabric of memory foam cushion cover is easy to remove. This means you can keep your cushion feeling fresh and clean any time you want.New Upgrade Now all adjustable foot rest are equipped with anti-skid Velcro, the Memory Cotton Pad will not shift! Note: Please do not stand and step on it.Do not adjust the height when you are stepping on it.