The Altra Olympus 5.0 is back with a more stable design and reformed heel collar for an improved fit. It's built with a zero-drop midsole and Altra’s Original foot shape design. What You’ll Love Increased padding and support in the heel collar The midsole extends up sides of the shoe for improved stability Vibram Megagrip outsole for extreme traction GORE-TEX technology protects your feet from the elements while allowing sweat to evaporate The Olympus 5.0 is a highly cushioned, protective trail running and hiking shoe. Packed with tons of EVA underfoot it has the impact protection and cushioning needed for all-day adventures. The newest model has a redesigned heel collar with increased padding for better lockdown and increased Achilles Tendon comfort. Finished off with an extremely capable Vibram Megagrip outsole the Altra Olympus 5.0 has all the elements to deliver a comfortable experience on any trail.