Crafted from a blend of synthetic materials, the lightweight, streamlined construction features a mix of resistant TPU film and mesh designed to last as well as a solid and easy QuicklaceTM lacing system for one-pull tightening, breathable lining for extreme comfort, and OrthoLite insoles that match the contours of your foot and provide cushioning, air-flow and durability, increasing the comfort and performance of the shoes. Built for maximum grip on loose, soft, rugged, and uneven surfaces, the white, blue and black Mud Contagrip sole uses deep, sharp lugs made from a compound that focuses on adhesion.