2-Pack: (Set OF 4) 4 Air Comfort Wrist Pads Keyboard Cradles Builtin Air Pump Mouse Laptop Computer, Helps Prevent Wrist Pain & Injury. 2-Pack: (Set OF 4) 4 Air Comfort Wrist Pads Keyboard Cradles Builtin Air Pump Mouse Laptop Computer, Helps Prevent Wrist Pain & Injury.