The Bogs Urban Lace is a rugged winter boot that is also 100% waterproof. This style features slip-resistant soles for traction, a plush internal lining for comfort and a 5mm NeoTech insulation for warmth. This boot is also made with Dura-Fresh natural biotechnology, which fends off unattractive odors. The Urban lace is comfort rated by Bogs to -40°F.