Altra Women's Olympus 5 Hike Mid GTX SandWith the ankle support you need and waterproof GORE TEX product technology, which is guaranteed by GORE TEX to keep you protected from the elements, the Olympus 5 Hike Mid GTX are your new favorite hikers, ready to keep discovering all day. According to Vibram, a grippy Vibram Megagrip outsole gives you unparalleled grip on wet or dry surfaces. Our Original FootShape Fit gives your feet room to spread out and move naturally so you can stay out there.