Personal Anti Fatigue Mat Insoles PAM Size::Men's 6 Women's 8 insulated heavy duty work boot with insulated heavy duty work boot with abrasion resistant toe protector Sole: Dual density cold temperature Timberland Pro® Thermo Plastic Urethane Outsole Upper: Waterproof leather upper with a waterproof membrane Lining Insulation: Spacer mesh lining with Agion® Antimicrobial treatment and 200g Thermolite® insulation Footbed: Anti fatigue technology absorbs shock with each step while returning energy back to the foot in key zones Height: 6” Size Range: 5 Temperature Regulating Aeration Holes and Machine Washable TemperWEAVE™ top layer of fabric reduces moisture and eliminates odour Ergonomically designed by a doctor For use with Industrial – Safety and Steel Toe Footwear