Design: Updated Fit Knit upper StealthFit construction is now more breathable while still delivering stretch and compression for an adaptable fit Wider midfoot for smooth heel-to-toe transitions In-Shoe Comfort: DNA AMP v2 foam in the midsole for added comfort in every stride Durability & Traction: Arrow-point pattern in the outsole lets your foot move quickly from heel to toe Additional Details: Weight: 9.9 oz. Midsole drop: 8mm