To ensure its quality, they put their leather through six different tests before making their selection. Full-grain leathers are the strongest and most durable form of leather. 100% waterproof and breathable, GORE-TEX liners ensure that no water gets in, while allowing sweat and moisture to get out. Our special hardware allows you to tighten from toe to top with one swift tug for a secure, tight fit. Meets or exceeds ASTM F2413-18 I/75 C/75 EH. Electrical hazard (EH) footwear is manufactured with non-conductive electrical shock resistant soles and heels.