Nautilus 2421 Men's Advanced ESD Nano Carbon Fiber Safety Toe Athletic Work Shoe 100% Synthetic Imported Rubber sole Seamless Synthetic Upper with TPU Overlay Support Super Lightweight Carbon Nanofiber Composite Safety Toe Cap. Meets or Exceeds ASTM F2413-11 Advance ESD Sock liner. EVA Midsole for Maximum Comfort. ESD Electric Static Dissipating Footwear meeting or exceeding all ASTM Standards Oil- and Slip-Resistant Carbon Rubber Outsole. 100% Man-Made Components. No Exposed Metal to Meet Scratch Resistant Workplace Requirements