Lifelj Non-slip Rubber Base Wrist Rests Mouse Pad Mat with Gel Rest Support for Computer Laptop PC (Black) 1.Silicone material. size: 18.5*22.5cm(7.2*8.8inch). 2.Mouse pad with wrist rest takes away the pain and strain from heavy mouse usage. 3.Polyurethane non slip base keeps pad in place. Suitable for right hand or left hand. 4.Ergonomic design mousepad ,combining the operating position under the pressure of silicone design height and wrist designed; unique non-slip bottom functional processing. 5.Gel wrist rest conforms to the contours of your wrist to alleviate pressure.