Graduated waterproof leather upper. Fireproof leather flap with Hook & Loop strap. Sewn entirely with Kevlar wire. PU /Nitrile sole.\n. Weight: 595 g*\n. \n. STRONG POINTS:\n. Very good resistance to contact heat (300°C). Perforated composite toe cap with breathable membrane and anti-perforating steel sole. Standard: EN ISO 20345: 2011 S3 HRO SRC