This is the ELECOM EX-G Tilt Mouse Stand 40° (for left-handed users). It reduces wrist strain with a natural angle. It has non-slip pads on the bottom. The receiver can be stored between the mouse and the stand. Designed for the M-XT4DRBK. The mouse itself is not included. This product is made with a 3D printer, so please be aware that it may have unique layer lines.