Wide profile steel toe cap 10 Gauge YKK Coil Zip ARZ+ Pad Technology TPU toe bump TPU outsole, PU midsole Dual Layer Memory foam / PU footbed Dri-Lex lining with Aegis anti-microbial 130 Celsius heat resistant Anti-Static Materials Water Resistant Leather and Breathable nylon upper ALL SIZES ARE UK/AU. Use size converter for USA sizing Size Guide****MEN'S AUS/UK 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 USA 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 EUROPEAN 39 39.5 40 40.5 41 41.5 42 42.5 43 43.5 AUS/UK 10 10.5 11 12 13 14 15 16 USA 11 11.5 12 13 14 15 16 17 EUROPEAN 44 44.5 45 46 47 48 49 50