SOKDO Underpower USB Heated Mouse Pad Lovely USB Mouse Hand Warmer with Wristguard Brown Material:Lint Size:24*22cm (L*W);Wire Length:140cm USB warmer mouse pad with built-in warmer pad can warm your freezing cold hand while at work. The temperature of the mouse pad will go up to a suitable degree after it is connected to the computer, just plug it into the USB port, then you can warm your hand all the time. Note:Remove the heat, wash in warm water. There might be a little color difference due to the monitor, camera or other factors.Please pay more attention to the size before you buy.