Olympus 4 are trail running shoes from Altra that delivers a max-cushioned, flexible ride wherever you roam. With a mesh upper for durability and breathability. With a premium tongue for a more locked in feel. Vibram® Megagrip™ rubber outsoles provide secure traction on varied terrain. Men's sizes.\n\nHeels have been rounded to encourage a smoother step from heel to toeInnerFlex™ midsole technology ensures increased flexibility and performanceStack height of 33mm provides ample cushion for long runsBuilt-in GaiterTrap™ secures your gaiters (not included) to your trail shoes to keep out dirt and debris Altra Men's Olympus 4 Black Steel | Buy Altra Men's Olympus 4 Black Steel here | Outnorth