Ever tried hammering down a rocky path in your bathroom slippers? Of course not. It would hurt. That鈥檚 what I kept thinking鈥this should hurt鈥攚hile navigating a nasty downhill in the ultralight shoes. In fact, rather than painful, the run was freeing; I felt more agile than I had while wearing beefier shoes on the same trail a week earlier. That鈥檚 thanks to a Vibram outsole of linked rubber pods that wrap around rocks when pushed inward, diffusing force instead of cushioning it. The Zeros are the next generation of the tried-and-true Minimus, retooled with a roomier toe box, a tissue-thin upper, and that rock-defying outsole. But the craziest upgrade is what isn鈥檛 there: weight. At 4.5 ounces, they鈥檙e 40 percent lighter than the first version. Spend a couple days in these and you won鈥檛 go back to normal trail shoes. You might not go back to normal trails, either.
