Cosmos &reg; 2 Pcs Black Color Premium Protection Case Sleeve Cover Pouch (PU Leather and Neoprene) for Microsoft Arc Touch Mouse Protect your mouse out of scratches One case made of PU leather, the other made of soft neoprene Compact size and provides a good protection PU leather case : 5.25" L x 2.75" W; neoprene sleeve: 5 x 2.6 x 0.3 inches Perfectly fits to Microsoft Arc Touch Mouse