GTS Global, a Korean shoe manufacturer - who also happens to make some minimalist shoes - has a novel take on resoling (or re-upper'ing) shoes: zippers. PiiPiiNOO Zipper Shoes are Chuck Taylors with a twist (or a zip); the uppers can be separated from the soles via a zipper. The primary reason for the design is fashion, as you can mix and match the uppers to your hearts content. Of course there is a practical side as well, as you can re-sole your favorite pair when they wear out. As long as you don't wear-out the zipper first changing the uppers every day...

I think the idea is rather clever. Maybe some other companies could implement similar systems to make it easier for us to re-sole our shoes without having to throw everything out. What do you think?