It's not exactly the sexiest laptop bag I've ever seen but if you are out for the day with your laptop and need power it could be your new best friend. The Voltaic Generator bag from Global Satellite USA produces enough solar power to fully charge a laptop from less than a day in the sun. It features a high-efficiency 15 Watt solar panel that can gather a full laptop charge after five hours of full sunshine. Each hour in the sun is equivalent to 20-45 minutes of laptop run time depending on the laptop and it can also be used to charge other devces like phones, mp3 players and cameras., The bag is constructed of fabrics made with recycled soda bottles which are tough, waterproof and UV resistant. The solar panels come in five color options, orange, silver, green, white and black. It sells for $499. Laptop Mag recently reviewed it giving it three out of five stars, finding it cumbersome, heavy and not compatible with all laptops.