Standard ASTM F2413-18. Water Repellent printed leather upper. Breathable leather. Unlined. Thermic insole footbed, made of soft and scented polyurethane, anatomic, insulating against high temperatures, covered with cloth. The thermal comfort inside the footwear is granted thanks to the special polyurethane compound devised to give high insulation. Heat Defender P/U Sole nitrile rubber resistant up to +572 °F (1 minute contact). Non-metallic toe cap. Top Return Plate non-metallic. Apt Plate zero perforation with high electrical resistance. Wide width. Asphalt footwear.