Thule TAS113BLU Gauntlet Sleeve For 13-Inch MacBook - Blue Fits 13 inch MacBook and MacBook Pros Semi-rigid, high-density construction provides protection on its own or in your backpack or bag Water resistant zipper and outer shell enable all-weather use Elastic band keeps your laptop securely in place as you unzip the caseThe clamshell design lets you to use your MacBook while still in the case