SPEEDROLL Technology propels you forward effortlessly. A taller bed of PWRRUN foam cushioning comfortably cushions your stride. Streamlined heel clip hugs and supports your foot with less weight. Deeper FORMFIT design hugs every part of your foot for a personalized fit and feel. New torsional heel groove provides a smoother transition from heel to forefoot. Lightweight, breathable mesh. Durable XT-900 rubber outsole. PWRRUN+ sockliner for comfort. Heel-to-toe Offset - 4mm (39mm heel/35mm forefoot). Weight - Men’s 9.4 oz. (266g)