Grey Ant has paired up with outdoor footwear brand Teva to create what they're calling the most comfortable performance high heel on the planet. Basically, it's Teva's Hurricane sport "mandal" redone on a four-inch stacked stiletto. There are two styles, $330 each: the "Worlds Unite" in black and white with Velcro closure, and the "Natural" in tan with a buckle. It's an interesting collaboration, no doubt, but will it work in real life? Either way, it's fun to see the fashion-meets-the-outdoors shoot.