1. Toe Protection: Compliant metal toe cap (optional); 2. Puncture-resistant Insole: Kevlar (optional); 3. Material: Black top-grain soft cowhide + flame-retardant Oxford fabric; 4. Sole Material: Special rubber sole (natural rubber); 5. Execution Standard: Current 'GB 21148-2020 Individual Protective Equipment - Safety Shoes'; 6. Size Range: 35~46 (225~280).