Can find the one I have here: http://www.amazon.com/ALLPOWERS-Technology-Blackberry-Bluetooth-Compatible/dp/B00LGJ32AO/ref=sr_1_1?ie=UTF8&qid=1424991103&sr=8-1&keywords=folding+solar+panel

It was on sale for a little bit more when I got it, but it works out well. If you really want something that has higher than 5V output, you can simply hook up a cheap variable boost converter to get 9V, 12V, etc... Sure, you'll lose a little bit of efficiency in the power conversion, but for the price it's still worth it to me. Also size really isn't that big of a problem since it can also fold up. Typically just unfold it, throw it on the ground with some sticks to give it some angle and i'm good to go.