Dr. Martens Mens Vane Non-Metallic Electrical Hazard Composite Toe 6-Tie Boot Synthetic Imported Non-metallic protection and fully synthetic, breathable yet durable uppers over a composite toe-cap Highly flexible, cushioning EVA midsole and Softwair internal footbed Rubber compound outsole provides exceptional heat and slip resistance Padded collar and tongue add to the internal comfort and reflective heel panel Safety spec: ASTM F2413-11 MI/75 C/75 EH