The Apelock Solar Backpack is the perfect backpack for hard-working and hard-playing commuters. Our clever solar panel charges your phone through a 5,000 mAh powerbank. And it charges your other techy stuff too. A rugged polyester canvas gives the backpack a soft comfy feel. PU coating makes the bag water resistant. Dapper red lining on the inside makes it easy for you to find your things (not black, never black…). All zippers are from YKK®. There is even a zipper around the whole backpack, so you can easily expand the volume inside 45%.