2.5L large capacity double shoulders backpack for outdoor cycling hiking， camping， traveling， etc.
Two-way smooth zipper closure， easy to use
With 2L water bag (included with suction water tube)， holding enough water before going out
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 can be detached (hanging on the backpack by belt with button buckle)， convenient for you to use while taking a break in your courtyard / balcony
Where there is sunlight， there is electricity

Solar panel parameters:
Power rate: 6.5W， 6V
Solar conversion rate: 22 percent
Panel dimension: 15.5 x 30.2cm
USB output: 5V， 1A

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