Precise™ surface enhances the precision of optical mice at fast speeds. Battery saving design extends battery life of wireless mice up to 50%. Foam mouse pad with non skid backing keeps mouse pad in place. Ultra-thin—ideal for computing on the go. Store on the back of notebook computer between uses. Wrist Filling Material: None; Mouse Pad/Wrist Rest Type: Mouse Pad; Color(s): Light Gray; Theme: Bitmap.