Servus 12" Polyurethane Processing Overboots, Blue & White (IT12PT17) Heavy-duty .8 mm thermal polyurethane upper is easily sanitized and is 100% waterproof to keep feet dry Polyurethane outsole and open tread design are lightweight to prevent foot and leg fatigue Unique strap system provides a secure fit to prevent boot from slipping and causing a trip hazard Wide, easily opened gusset provide ease in putting on or taking off over shoes Recommended use: food processing