Backpack is often used in our daily life, it's originally an ordinary product. However, this multi-media backpack has so many functions, absolutely beyond your imagination. It can not only be a solar cooler to preserve food and beverage very well, but also its solar panel can charge your cell phone and MP3. Moreover, it has two speakers for playing music. If you don't get used to too noisy sound, it also has a headphone jack for you to enjoy music alone. So a multi-media backpack like this one is the most suitable for picnic. It's priced at 85 US dollars abroad.