Muck Women's Arctic Sport II Waterproof Tall Work Boot -Green- AS2T3TW Size:6 What does the Mt75 rating

What does the Mt75 rating mean

Equipped with a steel safety toe cap for protection and our waterproof SCUBALINER™ for comfort in wet environments

It's designed for high-heat environments

It combines a 100% waterproof GORE-TEX liner with 200G Thinsulate insulation

Muck Women's Arctic Sport II Waterproof Tall Work Boot -Green- AS2T3TW Size:6 What does the Mt75 ratingWarmth for Women Who Love the Outdoors The Arctic Sport II Tall boots are designed for women who love the outdoors, even in the coldest conditions. These boots step up the warmth factor with cozy fleece lining and a 5mm neoprene inner boot for ultimate warmth in conditions as low as 40F. The stretch fit top line binding keeps the boots snug to your legs to keep cold air out and warm air in. An EVA molded midsole offers support and the rugged outsole