Although we cover an insane amount of devices that fit into your pockets, we hardly (if ever!) talk about the pockets themselves. My guess is that because they haven't really changed throughout the history of clothes, pockets haven't kept up with the stuff they hold. They're pockets.
Everything changes at some point, though . . . including clothing. A few researchers have created a material that they're dubbing Power Felt. Power Felt is exactly what it looks like: felt that provides power to whatever is inside the pocket.
It works by taking your body heat and converting into electricity. Everybody produces body heat, no matter what activity is being done. So basically, you could put your dying iPhone 4S into a Power Felt pocket, charge it up, and take it out with an extra bit of juice.
The material could potentially be used in car seats, as well, but we already have car chargers for that. I'm just incredibly excited to see this material make its way into pea coats and skinny jeans so I can stay fashionable while making sure my phone doesn't die on me.[Mashable]