Our BOGS wellingtons are100% Waterproof and designed for everyday wear. Constructed with 3mm Neo-Tech waterproof insulation and DuraFresh natural bio-technology which activates to fight odors. The plush lining gives both warmth and comfort and evaporates sweat to keep feet dry. These wellingtons are machine washable and are comfort rated to 14°F/-10°C. We would advise going up by one size as the product comes up short.