Useful for cycling， camping， travel and other lifestyle activities.

Features:
It is crafted from water resistant nylon， high intensity and durable.
Come with solar panel， it is convenient for you to charge your phone or ipad.
The buckles around the chest to stop slipping.
Adjustable straps and breathable mesh backing for comfortable carry.
Huge water capacity inside the bag， you can drink water any time when travel. 
Great for you when your equipment has no power.

Specifications:
Backpack Material: Nylon
Solar Panel Material: Crystalline Silicon
Color: Red / Blue(optional)
Backpack Capacity: 15L
Water Bag Capacity: 2.5L
Power: 6.5W
Output: 5V
Transfer Rate: 22.5%
Solar Panel Size: 31.5 * 17.5cm / 12.40 * 6.89in
Backpack Size: 25.5 * 9 * 44cm / 10.04 * 3.54 * 17.32in
Package Size: 53.5 * 40 * 5cm / 21.06 * 15.75 * 1.97in
Package Weight: 728g / 25.68oz

Package List:
1 * Backpack
1 * Solar Panel
1 * Water Bag
1 * USB
1 * User Manual