This item is pre-order but is already fully-funded on Kickstarter. "The Granola Strolla solar charger is a plug and play device that is able to charge almost any USB device, just as fast as a wall charger. The Granola Strolla works by absorbing power from sunlight, and then storing the energy within its environmentally friendly Lithium Iron Phosphate battery. It charges up when you’re out and about so it will still have power when it is dark. Our multi-directional design allows our product to always be charging without requiring any special deployment. It’s light weight, water resistant and less expensive than other brands on the market."