Only available from Hammacher Schlemmer, these are the professional grade winter boots made in Jämtland, Sweden, where winters are notoriously harsh. Using proprietary technology, the boots are insulated with millions of air bubbles that help protect feet from the bitter cold in temperatures as low as -50° F. The thermoregulated waterproof boots are constructed from durable, impermeable polyurethane and have a seamless design that prohibits moisture from snow, ice, or water seeping in. The lightweight boots have a soft acrylic lining and molded outsoles that ensure traction on slippery surfaces. Imported. Black. EU sizes 36-45 fit US men’s sizes 5-14 and women’s sizes 61/2-151/2.