Polyurethane Boots That Contains Millions Of Tiny Air Bubbles Making The Boots Lightweight And Giving Excellent Thermal Insulation. Upper: Anatomic Polyurethane Upper. Outsole: Easy Cleaning Polyurethane Outsole Dust-Proof. Lining: Anti-Bacterial Sock. Footbed: Removable Insole Made With An Antistatic Foam With Extra Grip Printing. Good Sweat Managing For Extra Comfort. Special: Insulation -20C -4F. Certification: En Iso 20345:2011 S5 Ci Src. Steel Toecap And Midsole. Self Cleaning Outsole. Slip Resistance Src.See `More Information` below for sizing and Colour detailsPTDFTSDIR331895675602