Full Grain Leather Padded tongue with half bellows for enhanced comfort 7 Pair rust-resistant D-ring lace-up for quick removal of boot Special needle-fibred vamp lining for excellent perspiration absorbency Anti-static, non-woven in-sock for comfort and flexibility Anti-bacterial energiser top sock with EVA inserts at the ball and heel for enhanced comfort and shock absorbency Shank reinforcement for additional arch support Single density Polyurethane (Heat-resistance up to 95°C)