This Kursk winter boot is crafted from vintage hydro-natural leather and features an adjustable lace closure with rugged metal eyelets and a side zipper for an easy on-and-off. A robust zipper with bellow stops the intrusion of snow. A BREATHTEX waterproof membrane ensures a dry fit while a lining enhanced with breathable insulating OLANTEX film and an ISOWARM insole made of 90% wool with insulating and reflective silver foil keep feet in warm cushioned comfort. An Italian sole with 16 stainless steel spikes, built-in swiveling and folding OC System® with flow channel delivers secure non-slip grip and traction. Upper material: Patent leather and polyester with quilted padding and boiled wool collar Lining material: Wool and felt also equipped with the OLANTEX breathable insulating film Fastening type: Lace-up closure Boot height: 7" - 17.8 cm Detached boot collar size: 15" - 38.1 cm Temperature rated up to -30°C. OLANTEX MEMBRANE The Olantex membrane is one of the first and most used Olang's tecnologies available in several models of both winter and trekking/outdoor collections. The material of the membrane makes it water plus abrasion resistant and breathable, bringing out comfort and lightness. OC SYSTEM The system features stainless steel studs and a framework created with a special, flexible polyurethane that is durable even at the most extreme temperatures. OC SYSTEM works in two positions: grip on / grip off. The OC SYSTEM KEY makes it easier to flip the position on and off. BREATHTEX This membrane maintains the special skills of the Olangtex boosting the water resistance. Breathetex gives the maximum freedom of movement, comfort and lightness. Free Shipping on all orders over $100 and a 30-Day Returns policy.