Note: Manual measurement has an error of 1?2cm specification: Item Type: Under Desk Footrest_x000D_Material: Memory foam_x000D_Size: Approx. 40 x 20 x 10cm / 15.75 x 7.87 x 3.94in _x000D_Function: Lift, raise the floor of feet or legs slightly to promote blood circulation and prevent restless legs and numbness Features: 1Promote Blood Circulation: Sitting on a desk for a long time may cause numbness and discomfort in the legs and feet. Foot rests can improve blood circulation and prevent pain. 2Body Alignment: The inclination of the feet and legs to align the hips, back and shoulders. The footrest under the table lifts your feet to the correct position. 3Arch Support: The foot rest is designed to fit the natural arch of the foot, reducing physical discomfort and fatigue, and making you more comfortable at work. 4Portable: A handle on the side for easy carrying, zipper design, detachable and machine washable, the non slip bottom will not slide under the table or scratch the floor. 5Memory Foam: Made of high quality memory foam, our footrest uses your own body temperature to soften and fit your feet, bringing comfort. PackageList: 1 x_x000D__x000D_Under Desk Footrest