Solar Charger, PowerGreen14W Solar Panel Charger with Dual USB Port for 5V Mobile Devices (Portable, Foldable, High Efficiency) INCREDIBLY DURABLE: Industrial-strength PET polymer faced solar panels sewn into a rugged polyester canvas offer weather-resistant outdoor durability. HIGHLY PORTABLE Solar Panels: Foldable design for easy carry and transport, water resistant to endure all weather conditions, great for nature trips, hiking, picnic, sailing or other outdoor activities (Water resistant for the main body of the panel, not including the USB output ports) DUAL USB OUTPUT Solar Charger: provide enough power to charge two devices at the same time when you run into embarrassing power outage moments SLIM AND POWERFUL Solar Charger: 1/3 lighter than the same power of solar silicon. The total power increased by 1/3 in compare with the same solar panel size; eye-holes enable easy attachment to backpacks while hiking; Portable and frame design fits for outdoor and indoor use HIGH CONVERSION FEEICIENCY: SUNPOWER mono-crystalline solar panel increases conversion efficiency up to 24% which is much higher than common solar panel charger