Koolertron Hydration Sport Backpack Cycling Bicycle Bike Hiking Climbing Pouch With 1.8L Bladder Bag and 6.5W Waterproof Solar Powered Panel Charging for iPhone/iPad/SAMSUNG/Tablets and Other 5V Device Take Your Power with Smart phones, Tablets, MP3 Players, GPS Units and more while Camping, Hiking and more Outdoor Activities! Solar Power Bag is a strong, durable, stylish, flexible backpack made by High quality Nylon material. Charges your smart phone, tablets and other 5V device using the solar power battery Solar Power Bag keeps you from being in a situation when you are powerless