Portwest Base Fortrex T-MASSIVE B1611 S3S HRO CI HI LG FO SR 7" ZIP boot, water resistant Nabutek leather; SmellStop lining, Fortrex puncture resistant patent + Dry'n Air footbed; SlimCap toe-cap; Fortrex sole Pu + Rubber.  Product Features Men's Width 12 Women's Width 10.5 200 joules resistant toe-cap Anti-static footwear Shock absorption in the heel region Puncture Resistant 3mm Heat resistant 1 minute up to 300°C Cold insulation up to -17°C Heat insulation up to 150°C Ladder Grips Hydrocarbons resistant Materials Upper: Water-Resistant Waxy Leather Lining: SmellStop Antibacterial Midsole: Polyurethane Toecap: SlimCap Sole: Rubber Standards EN ISO 20345: 2011 S3 For more information about the Fortrex range click here Please click on the size guide to check the Portwest Base footwear sizes.