Whoever Rocks These 100% Waterproof Bad Boys With Their Slip-resistant Soles, Their Plush Lining And Their 5mm Neotech Insulation (For A Comfort Rating To Forty Below Zero), Should Also Appreciate The Durafresh Natural Bio-technology, Which Fends Off Unattractive Odors. And Its Bloom Algae-based Footbed, Which Protects Endangered Water Habitats.