Product Description 1.PORTABLE & FOLDABLEthat can be easily squeezed into your backpack, offering portability and simplicity, the hiking buckle makes it ideal for attaching to your backpack while hiking or walking around town. 2.This special PET polymer surface protects solar panel from occasional rain or wet fog and three ports are covered with rubber cover to protect them from dust or water damage. 3.SMART IC CHIP TECHNOLOGY & SAFETY FEATURE your devices can be charged safely and fast. 4.WIDE COMPATIBILITYOur solar phone charger can't store the electricity, please unfold all solar panel in outdoor direct sunlight, then connect your device to USB output port.