The Reactor Solar Backpack is the first in a line of backpacks with an integrated solar charging solution. This backpack combines the traits of a feature rich quality bag with a smart, effective solar charging module. The backpack has multiple pockets for your cell phone, PDA, hand held GPS unit, CD player or MP3 player, and a laptop computer. The MP3 pouch includes an inner mesh pocket and a convenient outlet for your headphones. External side mesh pockets can be used for a water bottle holder or other items for quick access. Included with the pack are large cavities for books or extra clothing when traveling. The back cavity houses a laptop sleeve that can be removed when extra space and lighter weight is needed. The front zippered accessory pouch includes pen holders, cd holders, an elastic lanyard for keys, and a removable clip for USB memory sticks. The integrated solar charging module can be utilized by using a common 12V automotive charging adapter made specifically for the brand and type of personal electronics you own. Using a cell phone as an example, you can trickle charge the cell phone battery during long hikes or hunting trips with the backpack using your existing cigerette lighter cord (not included). The result is an extension of battery life, and a source for charging when traveling in remote areas where traditional chargng sources are not available, or in emergency situations. The result is the ultimate backpack for your mobile needs. This solar panel is not designed to charge a laptop computer. Product Specifications Fabric: 1680 Denier Nylon Size: 18” x 13” x 8.75” Weight: 3.7 pounds without the laptop sleeve; 4.6 with the laptop sleeve Capacity: 1850 cubic inches Warranty: Limited Lifetime Product Highlights Solar Module providing up to 2.5 Watts of power Single 12V charging outlet Padded waistbelt Water bottle pockets Mesh ventilated, padded backpanel Contoured and padded shoulder straps Accessory pockets Organizer pockets Portal exit for headphones Fits laptop computers up to 15"