Misula New Cute Paws USB Powered PC Heating Hand Warmer Mouse Pad Mat Cushion Velvet Inside with Wristguard for Home and Office Use Size:300x300mm (Brown) Made of soft and comfortable fabric Easy to use, simply plug it into the USB port, then you can warm your hand while using the mouse inside it USB powered, safe and secure Perfect gift for everyone Size:300x300mm, which is big enough for boys playing games