Bopai 851-009911 Business Anti-theft Waterproof Large Capacity Double Shoulder Bag,with USB Charging Port, Size: 30.5x13x45cm, 851-0099111. Made of water resistant polyester material, you do not need to worry about weather change. 2. Small size, large capacity, it large enough to storage your little world. 3. Concealed outer pouch, support anti theft. 4. Compact and lightweight, easy to carry and use. 5. Simple and generous design, heat dissipation, comfortable and breathable. Brand: BOPAI Product Name: Backpack Specifications: 30. 5x13x45cm Fabric: Microfiber synthetic leather fabric