1：Your laptop is protected from potential drops and bumps by the corner patent design. 2: Water-resistant zipper made of SBS 3. Firm and scratch-resistant retractable waterproof TPU handle (often found in car trailer ropes) 4. Protection from faux fur and bubbles 5. Materials resistant to water 6. Two-compartment zipper design for efficient accessory organization 7. Convenient front pocket with an elastic keychain inside. 500/540/605/615g net weight