The #600 is built for comfort, with a soft brown leather upper and leather lining. It also features hidden stitching in the heel for added durability. Herringbone elastic. With hidden stitching. Leather Lined. Polyurethane (PU) midsole/thermo urethane (TPU) outsole highly resistant to hydrolysis and microbial attack. Fully removable shaped comfort footbed. XRD®Technology in the heel strike zone for increased impact protection. Steel shank for maximum torsional stability. Lightweight and durable. Electrical hazard resistant. Available in the following sizes:  523507 size 3, 523513 size 4, 523517 size 5, size 6, size 7, size 8, size 9, size 10, size 11, 523541 size 12, 523542 size 13.