Design: Mesh upper keeps your foot secure while remaining breathable to help eliminate distractions Speed Heel pulls the collar away from your Achilles to help avoid chafing and irritation Lace-up style keeps your foot secure In-Shoe Comfort: Lightweight, nitrogen-infused DNA Flash foam cushioning is responsive and adaptive for a fast experience Durability & Traction: Updated RoadTack Rubber outsole provides increased traction for quick forward turnover Additional Details: Midsole Drop: 8.0mm Outsole is made with recycled materials In-Shoe Comfort: Lightweight, nitrogen-infused DNA Flash foam cushioning is responsive and adaptive for a fast experience Durability & Traction: Updated RoadTack Rubber outsole provides increased traction for quick forward turnover Additional Details: Midsole Drop: 8.0mm Outsole is made with recycled materials