Crosskase's innovative, highly protective backpacks have a 3 watt solar panel on the front of the bag, allowing it to soak up natural light and store the generated energy inside an internal battery.
This enables the rucksack to power up gadgets such as phones, music players, and other hand-held gadgets on the go via various adaptors.
The bag doesn't just work in bright light either – it trickle charges from cloudy days and artificial light, and even in rain.
The bags cost £139.99 including VAT. For more information, visit the Crosskase website.