Design: Technical synthetic mesh upper delivers a foot-hugging fit Gusseted tongue mitigates tongue migration Zonal rubber placement ensures weight savings Recycled polyester laces In-Shoe Comfort: PROFLY-X(TM) construction provides cushioned landings and propulsive toe-offs Sandwiched between 2 layers of ultra-responsive, high- performance foam, a carbon fiber plate delivers enhanced propulsion Durability & Traction: Durabrasion rubber outsole Additional Details: Weight: 8.3 oz Heel-to-toe drop: 5mm