Firefighter fire protection boots: The surface of this product is made of imported natural rubber material, the middle layer is made of Niu Brown insulation layer, and the sole has a steel plate bottom layer. The boots have anti slip, anti smashing, anti cutting, and high insulation properties, which can effectively avoid foot injuries; This product is suitable for the protection of firefighters in environments such as fire operations. Color: black, yellow Size: 39-43 Notes: This product cannot be used for electrical insulation wear. Avoid long-term contact with strong acids and alkalis, and do not expose to direct sunlight.