The Quantum™ QC™ HD™ combines athletic performance and fit, Quad Comfort® technology, and all the safety features needed for the job. A Hyper-dri® barrier offers 100% waterproof protection. Four layers of cushioning and a padded collar provide comfort, and a longwearing oil- and slip-resistant outsole and scuffresistant toecap increase its durability. The steel safety toe meets or exceeds ASTM F2413-05 M I/75 C/75 EH. Nylon shank.