Take your work tools with you Contour Universal Sleeve is a case that has been specially designed for our RollerMouse products. Protect your RollerMouse during travel or storage with this soft sleeve. Avoid scratches, dust and dirt No fixed workstation? Thanks to the Universal Sleeve, you can take your RollerMouse and Balance Keyboard with you without risking them getting scratched, while simultaneously protecting them from dust and dirt. The sleeve has a pocket on the front that has space for an extra mouse, cables or other accessories.