23L large capacity double shoulders backpack for outdoor hiking， camping， traveling， etc.
Velcro stick and plug in buckle closure， convenient to use
Interlayers pockets inside， holding your stuffs tidily
Durable carrying handle makes is convenient to carry the backpack
Specially designed with a solar panel， you never need to worry about the mobile phone or other electronic devices are out of power
The solar panel cannot be detached， inlayed inside the bag cover
Where there is sunlight， there is electricity

Solar panel parameters:
Power rate: 10W， 6V
Solar conversion rate: 22 percent
Panel dimension: 20.0 x 26.0cm
USB output: 5V， 1A

Note: This solar panel is without battery， it cannot store electricity