The Mack Octane Zip 2.0 safety boot remains incredibly lightweight while excelling in heavy-duty environments, thanks to innovative features tailored for the industrial workplace—from light duty to extreme duty. Composite safety toe cap Nitrile rubber slip resistant outsole Heat resistant outsole 300C HRO Slip resistant outsole SR Electrical hazard protection EH Heavy duty all leather upper Heavy duty YKK side zip closure H20 resistant upper Fuel/Oil resistant outsole Toe bump cap & heel scuff cap Ladder Heel Reflective design Other Features: Lightweight boot Wide fit Tech-Lite comfort build. XT-Nodes Articulated fit & Adapt technology Approved Standards: AS/NZS 2210.3: Class I SB PS FO WPA SC HRO E SR EN-ISO 20345: SB PS FO WPA SC HRO E SR ASTM F2413-18: M/I/C/EH/PR Benchmark Certification AS/NZS 2210 Australian /New Zealand Standards EN - ISO 20345 European Standards ASTM F2413 American Standards