• Breathable and adjustable shoulder straps relieve the stress of shoulder.
• Dimensions: 11.8 x 5.9 x 17.7inches / 30 x 15 x 45 cm (L*W*H)
• Fabric: high quality and comfortable canvas and leather
• Large Capacity- Allows you to hold your daily supplies like laptop, smartphone, wallet, power bank and books, etc
• With built in USB charger outside and built in charging cable inside,just connect to your own power bank, then it offers you a more convenient way to charge your phone while walking. Please noted that this backpack doesn't have power itself, usb charging port only offers an easy access to charge.