72910 Bogs Men's Arcata Urban Chelsea 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.