It's a legendary shoe, now with a legendary Vibram® Megagrip outsole for fierce grip. We turned up the traction so you can take on legendary adventures. A revised midsole foam is designed to deliver a comfortable connection to the ground. No-sew overlays and a ripstop mesh upper are made for high-mileage durability. Get that classic Altra feel with zero drop and our roomiest toe box, with plenty of room to help your toes move more freely, and space through the midfoot. Grip, durability, and connection on the trail? Legendary. Vibram® Megagrip™ Durable + sticky outsole for fierce trail grip Vibram® Megagrip is a high-performance sticky rubber that offers unparalleled grip on both wet and dry surfaces, rugged longevity, and optimal ground adaptability. Natural Fit Roomy toe box for natural movement With Altra’s signature FootShape™ fit, you get our roomiest toe box with plenty of room to help your toes move freely, and space through the midfoot. Altra EGO™ Responsive + comfortable cushion Connect with the ground and stay comfortable with unique Altra EGO™ midsole foam. STONEGUARD Underfoot protection from debris A StoneGuard™ provides underfoot protection on the trail, over rocks, debris, and tough terrain with a flexible yet firm and stable feel. GAITERTRAP Stay protected and clean GaiterTrap™, our unique hook-and-loop tab, allows for easy strapless gaiter attachment without fasteners, bungees, or bindings. Trail debris in your shoes? No thanks! APMA Certified Promotes good foot health This product received the American Podiatric Medical Association (APMA) Seal of Acceptance, awarded to products found by the Association to promote good foot health.