The WiWU Alpha Double Layer Sleeve Handbag is made of Waterproof Nylon. It has a corner patent design that protects your laptop from bumps and drops in potential accidents. This laptop sleeve case is compatible with 13.3" laptops, MacBook and Ultrabook. It features a durable YKK zipper. It also has a retractable waterproof TPU handle, firm and scratch-resistant (commonly used in car trailer ropes). It has faux fur lining protection. It has been manufactured with water-resistant material. The size of the bag is 33.5x24.5x2.5cm and it has a net weight of about 270g. The WiWU Alpha Double Layer Sleeve Handbag has no warranty.