Valenki with AURORASTAR soles are specially designed for Russian winters, when in some regions the temperature reaches -40, and in others -5 on average. They operate from natural dense semi-coarse felt 3-5 mm thick. Felt, consisting of a large number of valuable interlocking woolen goods, is the purpose of insulation. It absorbs and removes it wonderfully. The outsole is made of polyurethane with technological conditions to ensure it is as fast as possible and will prevent slipping, and the insole made of woolen comfortable fur and felt will keep you warm. Dry at ambient temperature. For long-lasting footwear, use a water-repellent aerosol vicory spray.