Mybox USB Heated Mouse Pad / Hand Warmer USB Warm Winter Mouse Pad with Wristguard-- CAT Perfect Gift for Everyone Material: Flannel+ Rubber Size: 230 (L) * 205 (W) * 60 (H) mm Cable length: 136.5cm USB powered, safe and secure Easy to use, simply plug it into the USB port, then you can warm your hand while using the mouse inside it