With an all-new durable Vibram® XS DURA rubber outsole, it’s 8.5% grippier than the Torin 8 and made for whatever the road throws your way. An all-new P35X™ dual-density foam is built to deliver an energetic, cushioned underfoot feel by combining a soft foam with a firmer one for a stable and comfortable ride. We fine-tuned premium details, like an updated heel shape, elevated tongue details, and a breathable mesh upper for an improved fit and soft step-in. With the Altra Fit, you get plenty of room to help your toes move more freely, and a secure midfoot, with zero drop so you can move naturally. Step into a shoe loaded with comfort and responsive performance, for every run that makes you uniquely you.