The Altra Olympus Low GTX 2 Hiking Shoe comes with plush, responsive foam, a highly breathable membrane, and grippy Vibram lugs to help us put our best foot forward on big day hikes. Substantial midsole foam absorbs the impact from miles of rocky terrain, while the Vibram Megagrip outsole provides traction in sketchy scramble sections. Plus, with the GORE-TEX Invisible Fit liner, we march forward confidently under uncertain skies thanks to the waterproof, breathable performance.