Defying -30°C: Ultimate Arctic Armor. Built for freezer warehouses, ice plants, and polar worksites, Safetoe thermal work boots integrate 3M™ Thinsulate™ insulation (-30°C rating) and natural wool lining (-50°C rating) to block extreme cold. Waterproof cow leather uppers pair with SR-rated ice-grip soles to conquer oily/icy surfaces. Tested for flexibility at -30°C (100K bends without cracking), they ensure warmth and stability where others fail.