You'll scoff at wintery weather in this high-tech snow boot from Kamik. Constructed with a lightweight, yet durable waterproof nylon shell, the Greenbay 4 features a removable Thinsulate foam liner and a lace-lock snow collar designed to keep warmth in and cold out. Rated to -40 Fahrenheit, the boot has a mid-foot adjustable Velcro closure strap to help keep the foot snug and a thick treaded rubber outsole for traction on slippery, icy surfaces.