Features Enter your model number to make sure this fits. Converts sunlight to electricity : innovative solar fabric converts light into electricity, and charges built-in battery Charge any USB powered device : can charge all phones, bluetooth devices, mp3 player or USB-chargeable bike lights. Battery can be charged externally also By cyclists, for cyclists : water-resistant bag with cross-straps, air-flow and hydration hole for maximum comfort Reflective outline for road safety : reflective outline ensures maximum visibility at night Compact design, big capacity : light-weight bags for the daily commuter, that expand to accomodate overnight travel, water-resistant & protected : water-resistant fabric guards the electronics against rain and saltwater with flouroscenet rain-cover for heavy rains Description Product Description Lumos brings to you, for the first time, the water-resistant unplug solar backpack - the only backpack optimized for commuter cyclists in every way! the bag features and innovative 3w solar fabric with 2000mah battery for charging on the go. The laptop compartment supporting laptops up to 15.6 inches and provides adequate padding to ensure safety and comfort. Additionally, the reflective outline on the bag provides better visibility and safety while riding at nights. The cross-straps and weight-balanced design provides superior comfort while riding. The backpack also sports a hydration hole, a mobile pouch on the strap and expandable zipper for the ultimate cycling experience. The backpack ships with a fluorescent green high-visibility rain cover to protect the backpack during heavy rains and improve safety, the backpack can charge any usb device including mobile phones, blue-tooth devices, mp3 players and bike lights! the in-built battery can also be charged from a laptop or ac!