With the Glastonbury Music Festival drawing near, Orange decided it was time to present their latest eco-invention, a pair of wellies that can charge up mobile phones.

Created in collaboration with renewable energy experts GotWind, these charging wellies have a ‘energy generating sole’ that transform the heat from your feet, into electricity. All you have to do is attach your mobile phone to one of the wellies, and start walking.

It sounds like revolutionary technology, and it is, but you’ll need to do a lot of walking to create enough energy. For example, for one hour of charge time, you have to walk for about 12 hours, in the wonder wellies. But you can speed things up by running, or dancing. The idea is to get your feet as hot as possible, to produce more energy.

The charging wellies, made by Orange, will be presented at the upcoming Glastonbury Festival.

via Orange Newsroom