Made of Nylon Twill Fabric and this jet-black Bag is the smartest fit for college and univeristy. Outside pockets and inside pockets make a perfect combination with students use. A 17" Laptop can be inserted inside along with tablet mesh pocket in the front. Backpack is padded from all sides and is water resistant but we suggest you to buy separate rain cover for maximum protection. Dimentions are 42 x 29 x 16 centimeters.