Personal Anti Fatigue Mat Insoles PAM Size::Men's 6 Women's 8 shoes and any other footwear shoes and any other footwear that needs protecting 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 STYLE: PAM Features: Silver Ion Anti Microbial Technology in Top Cloth Offering Anti Bacterial Temperature Regulating Aeration Holes and Machine Washable TemperWEAVE™ top layer of fabric reduces moisture and eliminates odour Ergonomically designed by a doctor