PWRRUN PB cushioning. PWRRUN Frame starts above the midsole to support your foot upon landing. Lightweight, breathable mesh upper. Formfit design addresses every point of contact with your foot. Durable XT-900 outsole. This style contains recycled upper materials. APMA certified. Heel-to-toe Offset - 8mm (36.5mm heel/28.5mm forefoot). Weight - Women 7.9 oz (224g).