What the high heel is to the hip of today, the Earth shoe was to the hippie of the '70s. Known for its negative heel technology, the Earth shoe enjoyed years of popularity, followed by decades of obscurity. Now, it's back and a new generation is enjoying the benefits of walking on an incline. Moving up in our top Shopping searches, Earth footwear shows a strong return with a full line of athletic casuals and chic boots.

So, why on earth all the interest in Earth? Maybe it's because Earth shoes keep wearers on a posture-correcting slope, where according to the manufacturer, they "burn more calories with every step." Or maybe the maker of this unique sole offers something for the buyer's soul. Its leather-free collection appeals to vegans. And the company's offer to donate a share of its profits to Earth Share likely appeals to environmentalists. Seems like today's hip may just have something in common with yesterday's hippie.

Earth shoes - now up to 60% off!