Solar chargers for electronic devices compatible with any USB powered 5V input voltage devices, such as an Phone PLUS, X, 8, 7, 6, 5S Pad, Galaxy S8, S7, S6, S5, ibose, tablet, Edge, Note, mini, Nexus, LG, HTC, action camera, Android mobile, go-pro, GPS, Kindle, speakers, power banks of various capacity etc. And the solar panel removable so that it easy attachment to backpacks.This backpack is made of high quality tear and water resistant nylon & polyster fabric, heavy duty metal zippers and enhanced by bar-tacks at major stress points provide long-lasting durability against daily activities. The extra strength provided by the double-layer bottom piece makes it possible to carry more stuff.