Features： 1、Monocrystalline Silicon Material: This foldable solar panel is made of monocrystalline silicon, which is lightweight and sturdy, long service life. 2、Easy to Use: Just face the solar panel towards the sun. With 1 USB charging port to charge the device, and the charging efficiency depends on the size of the sunlight. 3、 Performance: High conversion efficiency, great output efficiency, low light efficiency, light weight, easy to carry, strong applicability. 4、Foldable Design: Using advanced production techniques, this solar panel charger has a foldable design that can be used anywhere, convenient to carry outside. 5、Application Scenario: This solar penal charging bag is for camping, hiking, backpacking, horseback riding, fishing or other outdoor activities. Specification： Item Type: Portable Solar Panel Bag Material: Monocrystalline Silicon Weight: Approx. 314g/11.1oz Folding Size: Approx. 19x9cm/7.5x3.5in Expansion Size: Approx. 53x19cm/20.9x7.5in Power: 50W (without storage function) Interface: 1 x USB interface Package List： 1 x Portable Solar Panel Bag 2 x Buckle 1 x Specification