Lovely design, beautiful and practial, suit for home and office desk. USB Warmer Mouse Pad with built-in warmer pad can help warm your freezing cold hand while you are 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. Please note that the heater is separated from the mouse pad. You can choose to use or don't use the heater when using the warm mouse pad. Why the heating pad mounted on the top of the warmer mouse pad and in contact with the back of the hand? If the heating pad is installed at the bottom of the mouse pad, we put the hand on the mouse when we use it, only the bottom of the mouse touches the heating part, which will cause the mouse to be damaged and the hand will not feel warm. Bottom length: 30cm, bottom width: 22cm.