The Helius Solar Powered Backpack utilizes patented light optimizing technology which allows you to conveniently charge your iPods, cell phones, and PDAs powered by room or sunlight. The VDimension backpack gives you the ability to easily keep these devices charged all day in the front pocket of their backpack. The Helius optimizes the power of sunlight using only one small solar panel. The bag is designed with a laptop sleeve, multiple exterior and interior pockets, and a waist belt with stability adjustment.