The RollerWave is designed to replace the two removable foam pads that come standard with the RollerMouse. The replacement unit plugs into the slots on the RollerMouse's frame, providing a larger wrist-resting surface. Like the foam pads it replaces, the RollerWave is designed in a contour shape to maximize comfort, has an improved foam "gel", and is fully cleanable with mild soap and water.