The dewalt challenger 3 sympatex waterproof hiker boots have a full grain nubuck leather upper with a sympatex waterproof and breathable membrane the tpu sole is resistant to petrol chemicals oil and temperatures up to 120c the sole is anti static for increased user protection the boots have a lightweight and flexible design with shock absorption and a steel toe cap that offers protection of up to 200 joules there is also a steel mid sole for underfoot protection and a dual density anti bacter