What: Fitflops, $49
Why: We've already told you about Earth Sandals and their fancy Negative Heel Technology that makes you work while you walk. Well, apparently a trend has emerged and flip-flops are starting to rise to the occasion. Fitflops is a new line of footwear that claims to give your calves, glutes, thighs, and hamstrings a significant workout all thanks to the elevated midsole. And they are extra shock-absorbent which is great for your back.
I decided to take my pair out for a stroll around the city and ended up walking in them for a good two hours. By the end of my journey, I must admit, my legs were a-burnin'. And I certainly felt some muscle ache in my bum the next morning. Now I doubt wearing these from now on will transform my legs into statuesque, rock-hard gams (um, see above) but if I have a choice when walking out the door, I'll be sure to slip on my Fitflops and look forward to that burn the next day.