Design: Foot-hugging upper ensures a comfortable and secure fit GORE-TEX keeps your feet dry from the outside as well as from the inside Materials made from recycled products such as PET bottles or material waste Quicklace® lacing system In-Shoe Comfort: Sensifit construction offers precise, optimal foothold and classic Speedcross comfort EnergyCell+™ high-rebound midsole compound provides exceptional energy return along with substantial cushioning and durability Durability & Traction: Mud Contagrip® outsole built for maximum grip on loose, soft, rugged, and uneven surfaces Mud Contagrip® uses sharp lugs made from a compound that focuses on adhesion.