This multifunctional laptop backpack by Athacer is made out of water repellent Oxford with polyester lining material. The material is wear-resistant, scratch-resistant and extremely durable. The internal space of the bag is structured with several pockets and holders for your laptop, phone, wallet or any other items. There is a large pocket on the front which will fit most tablets. All of the compartments can be closed with a sturdy zipper. On the right bottom side of the bag there is a handy USB 3.0 port. The port can be used in combination with a power bank (not included) that can be connected on the inside of the bag. The straps are extremely comfortable with decompressing pillows to divide pressure over your shoulder, they can also be adjusted in length to match your preference. The back of this bag is completely ventilated with breathable material, this way you won't get sweaty under the bag. Model numberBP055TypeBackpackColorGrayShapeBoxMain materialWater Repellent OxfordLining materialPolyesterPatternSolidStyleFashionDimensions41 * 12 * 28 cmCapacity20 litersWeight0.56 kg