This high winter boot incorporating a wide range of functions provides a stylish look, warmth, safety and light weight for all kinds of outdoor activities in the cold season. The soft shaft is made from PU-coated velour leather, waxed velour leather, soft synthetic fabric and a soft fleece upper cuff. Effective insulation is ensured thanks to a high-quality insulating material, microporous membrane and fleece lining. The Mammut 4by4 Traction sole with Meteorite Rubber uses micro spikes to ensure a safe step on icy surfaces.