Cold-weather performance and style come together in the UGG Lachlan Winter Boot. This waterproof boot comes with a removable enerG Comfort System insole, which uses an additional layer of open-cell polyurethane foam for breathability and anti-microbial comfort. Featuring eVent waterproof bootie construction, this insulated boot can withstand temperatures as low as -32 C. An UGGpure wool lining offers moisture-wicking for warmth and dryness, while the Vibram outsole with ArcticGrip non-slip rubbe