Designed for extreme conditions, this boot will keep your feet warm and protected when you need to brave blizzard snows and frigid temperatures. Rated to well below zero on the temperature scale, this boot has a multi-layer system to keep your feet as warm and possible in the deep winter cold, while a waterproof construction shuts out unwanted moisture and high-performance rubber helps keep your footing on snowy surfaces. Tough winter boots designed for the harshest conditions you can find. Multi-layer insulation system keeps your feet warm in frigid temps. Waterproof construction ensures that icy moisture can't get in. Outsole rubber delivers added traction through snow and slush. Adjustable snow collar stops deep snow from sneaking in the top. Double buckle fastening provides a solid, secure fit. Upper Material: nylon. Waterproofing: waterproof nylon. Insulation: Double B-Tek (synthetic). Removable Liner: removable multi-layer inner boot system. Temperature Rating: -148F. Closure: double-buckle fastening, top drawcord. Footbed: double aluminum insole, waffle-comb footbed. Midsole: EVA. Sole: Polar rubber, Arctic Rubber shell. Recommended Use: extreme winter conditions. Manufacturer Warranty: limited.