Eratio Math Class Neoprene Laptop Sleeve 13 Inch Macbook Air Case Macbook Pro Sleeve and 13 Inch Laptop Bag Material: durable lightweight and super soft neoprene, waterproof breathable, soft and flexible The pattern is printed on both sides. Dimension: there are 5 sizes, please refer to description at the bottom of the page, please measure either from side to side, or by diagonal, do not measure from side by side by choose with inch standard. Two-way zippers allow you to keep your laptop protected while not in use. There's another zipper on the right corner, it means you can get your laptop charged when it sleeps in the enclosure quietly. Any questions, please contact the seller at the first time, your problem will be solve within 24 hours.