What's worse than being caught in the rain unexpectedly [i.e. no boots or umbrella]?

Being caught in the rain with no boots, umbrella, or cell.

Or, for that matter, being caught anywhere without your cell.

Presenting Orange's Power Wellies.
The boots have a power generating sole that converts heat generated from your feet into an electrical current. After 12 hours of walking, the boots will provide enough power to charge a mobile phone for one hour.

And if one hour isn't quite enough, just add a little pep to your step - the more heat generated, the more power provided.

I might still opt for Hunter's when it comes down to it, but I can't deny the practicality of these wellies...

Photo via mashable