Abstract: The invention is a device used in conjunction with a computer mouse and provides a flat platform for the entire palm area of the hand and thumb to rest upon and allows the remaining fingers to drape over its forward edge to engage any buttons or wheel. It utilizes a centrally located hole as a means to maintain its position upon a mouse and adhesives or mechanical fasteners or adhesive-backed hook and loop fasteners/tape, to provide permanence of the device to the mouse. The locating hole enables a variety of positions/angles for the device on a mouse to suit the comfort of the user without modifications to the device or mouse.