Come and see our amazing products. Made of water repellent nylon fabric, light-weight, No more aching neck, back & shoulders like with a backpack. Ergonomically designed, padded, breathable strap makes you forget you're even wearing this bag. External USB with built-in charging cable, Anti-theft design. And this bag does not include a battery, you need a power bank to charge it. It comes to an external earbuds jack as well. Pls confirm further with us if any query about packing info, inventory status and time schedule.