The full-length core of ultralight PWRRUN PB cushioning. The contoured PWRRUN Frame starts above the midsole to support your foot upon landing. More underfoot midsole contouring. Signature midsole geometry gives you a supportive base and a super smooth ride from heel to toe. With adaptive lacing and a lightweight midfoot saddle. Lightweight, breathable mesh upper. Our FORMFIT design addresses every point of contact with your foot, going well beyond lacing to ensure a personalized fit and feel, top to bottom. Durable XT-900 outsole. Lighter footprint. This style contains recycled upper materials. APMA Certified.