This backpack is made of polyester fabric, soft, wear-resistant and durable. The large capacity design can hold a 15.6-inch laptop, books, water bottles, clothing, umbrellas and other daily necessities. With a laptop protection compartment to effectively protect your belongings, the shoulder straps and back panel are ergonomically designed for comfortable and breathable wear, and adjustable shoulder strap length to meet different people's needs. It is suitable for students, office workers and outdoor sports enthusiasts