Constructed to be incredibly rugged and durable, the Boulder 30 Solar Panel by Goal Zero is built with strong tempered glass and an aluminum frame for temporary or permanent installation to your hunting or ice fishing shack, RV or camp site. It's incredibly easy to use, too. Simply set it outside and the sun does the rest. Designed to be used with all Goal Zero Power Packs to charge a cellphone, GPS, trail camera…you name it, in no time. Plus, the Panel is lightweight and very easy to transport, so you can take it with you no matter where you go. The weather resistant design means even Mother Nature has to work harder to prevent you from getting your smartphone charged. Keep your electronics charged, with help from the original power source. Use the sun!