For extreme winters, you need the extremely durable, comfortable and warm Ovation Blizzard Boot.
This synthetic canvas boot with wool & aluminum foil lined insole is unbeatable in the cold. It features include a 600 Denier water-repellent polyester canvas outer shaft which is laminated to a moisture-absorbent foam as well as an inner layer of fleece. This creates an insulated air layer designed to give extreme comfort in cold weather situations. The insulated multi-layer fleece insole also has an aluminum foil heat shield for added warmth.