Solar battery chargers

I’m going on a long bike trip (multiple days + camping in between) and I want to charge my GPS device and cell phone using some kind of solar device. I started looking around and found quite a few:

• Solio has a classic, hybrid, and magnesium edition.
• Soldius only seems to offer the Soldius 1, but it does not include an integrated battery.
• Megasol supposedly makes the Solar Energy Pocket Power (SEPP) but their website doesn’t support English.
• 21st Century Goods has an entire category for solar products.