Upper: Tongue featured an internal support elasticated strap, which is attached to the tongue and holds it in place. Memory foam lined heel collar provides form-fitting comfort. Added mesh for better breathability. Midsole: Superaction Midsole Material Features enhanced cushioning and durability. Blown Polyurethane molded sockliner for lightweight comfort while maximizing cushioning and does not break down like EVA does. Welded KPU tow protection for high durability in wear zones & designed in a way to help breathability. Outsole: Full-length Evergrind outsole features a modified tennis herringbone pattern for durability and traction, with flex grooves for improved comfort. TPU shank with added carbon fiber for midfoot support. Synthetic/mesh.