UGG has long been a go-to for cozy footwear when temperatures drop, and its new Adironback III style is perfect for facing up to sub-zero climes. The black leather-trimmed pair marries comfort and style, boasting waterproof leather uppers, along with the brand's innovative DryTech features, which help to keep moisture out and warmth in. The result is a cozy design, complete with a wool lining, that the Australian label purports will stand up well in temperatures as low as -32°C.