The agility of a light hiker with the warmth of a down jacket. We built these men's winter boots with active, frigid days in mind. With 200g of insulation, heat-trapping materials underfoot, and exceptional grip on snow and ice. - Non-marking multi-directional lugs for increased traction - 5mm multi-directional lugs for traction - Stability shank delivers lightweight support - KEEN.WARM Recycled PET insulation rated to -32°C / -25°F - KEEN.DRY waterproof, breathable membrane - Eco Anti-Odour for natural odour control - Environmentally preferred premium leather from LWG-certified tannery Material: - Waterproof leather and performance mesh upper - KEEN.Polar Traction outsole for more grip on snow and ice - Compression-molded EVA midsole for cushioning - Breathable textile lining - Thermal Heat Shield insole captures warmth Technologies: - KEEN.Dry: A proprietary waterproof, breathable membrane that lets vapor out without letting water in. - KEEN.Warm: Who knew charcoal bamboo could create something that keeps your feet warm? But it makes KEEN.Warm—a lightweight insulation that provides warmth where you need it most.