Features a full-length wrist rest for extra comfort Mounts under the desk to hold your keyboard and mouse securely. Low-profile design takes up less space. 9in. diameter, optically-sensitive mouse platform swivels to fit your ideal position. Mouse platform can be placed on either the right or left of the keyboard tray. All-steel construction ensures durability. Ball bearing gliders help the platform slide easily. Full-length, Viscoflex(TM) memory foam wrist rest helps reduce wrist strain. Lycra(R) covering is easy to clean with soap and water. Hardware and instructions included.