Lenovo B510 Carrying Case (Backpack) for 39.62 cm (15.60") Notebook - Water Resistant, Tear Resistant - Polyester Exterior Material - Shoulder Strap - 44 cm (17.32") Made from high quality water-repellent and tear resistant materials, the Lenovo 39.6cms (15.6) Laptop Everyday Backpack B510 is built for the daily grind. It fits up to 39.6cms (15.6) laptops with a main compartment that is spacious enough to carry personal belongings for the gym, a business trip, or everyday life. It also features a quick-access pocket and two side pockets for additional storage space.