Made of 900D polyester and is water-resistant and abrasion-resistant. With its clever design, this bag can be carried 4 different ways. Use as a backpack, briefcase, shoulder bag or hand bag. The main compartment can hold a 15.6 inch laptop with room in multiple areas for all your essential items. The front pocket has a waterproof area for a wet umbrella. 7.87" W x 14.2" H x 5.1" D