What a smart idea! Diesel's Puzzle Sneaker allows guys to save space in their closet (making more room to share with the women in their lives...) by making one shoe convertible into several different styles. All of the styles seem to give off a similar vibe, which is "modern," "functional," and frankly, a little bit "bionic man."

I wish they could apply this same idea to a pair of women's dress shoes, with options for either an open or closed toe, optional sling back or full back, and adjustable heel height. If they could do that, without having the end product look like it's related to Frankenstein, I'd be first in line to buy it.

If you want own your very own Puzzle Sneakers, you'll have to be patient. They officially go on sale in September 2007.