Amazon.com: Modoker Eco-Friendly 15.6 Inch Laptop Backpack 。- LARGE CAPACITY: Size: 11.4 inches x 7 inches x 15.7 inches, volume: 20 liters, weight: 1.99 pounds, 2 outer pockets, 2 outer pockets, 1 spacious main bag, 7 inner pockets, sturdy The large opening design makes it more convenient to pick up things. The backpack can hold 15.6-inch laptops, 10.5-inch iPads, mobile phones, wallets, water bottles, umbrellas, textbooks, and other daily necessities. Space can meet your basic needs! - MATERIAL&DESIGN: The material is made of Water Resistant and durable polyester fabric, strong and dirt-resistant. The magnet on the outer backpack can be firmly fixed. Breathable and comfortable adjustable shoulder straps reduce the pressure on the shoulders and back during use. - USB PORT DESIGN: The backpack has an external USB charging port and a built-in mobile power charging port. Provides a convenient way of charging. The USB charging port set in the backpack can charge electronic devices while walking, so you don\'t have to look for power everywhere.