Design: Carbon-infused ENERGYRODS 2.0 provide a seamless transition from heel to toe for a snappy, efficient stride Midsole drop: 6 mm (heel 33 mm / 39 mm) Lace-up style locks down your foot for a secure fit In-Shoe Comfort: New rocker point offers improved running economy Double layer of LIGHTSTRIKE PRO provides super-light cushioning, plus energy return for next-level speed Durability & Traction: Continental(TM) rubber outsole for a no-slip transition during toe-off LIGHTTRAXION is designed to reduce weight without sacrificing grip Additional Details: Contains at least 20% recycled content Designed for distance running