Transform any space into a productive work zone with this dual-function laptop sleeve that doubles as a portable desk mat for on-the-go work. The laptop pocket doubles as a built-in mouse pad, and the slim design easily fits in most bags. Medium: Fits laptops up to 320 x 223 x 16mm (12.6" x 8.78" x 0.63") Large: Fits laptops up to 356 x 249 x 19mm (14" x 9.8" x 0.75") Looking for a larger work surface? Check out ourDesk Mat