Incase Hardshell Case for MacBook Air 13″ with Retina Display, Mosiso Water Repellent Lycra Sleeve Bag, Herschel Supply Co. Anchor 13-Inch MacBook Sleeve, Thule Gauntlet 3.0 15” MacBook Pro Retina Sleeve and Aqua Quest Storm Waterproof Laptop Sleeve are some terrific choices for the MacBook. All of them are designed to fit the 13-inch beauty with ease and have their unique attributes. So, depending on your requirements and budget you can choose the best one.