Men's Revel IV Boot | Mid Polar Hiker | KeenThe 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. WinterLab tested traction Tested for grip on icy surfaces, even on an incline. Microscopic shards in our KEEN. POLAR TRACTION rubber dig into frigid terrain. 200g of KEEN. WARM Recycled P. E. T. insulation Stay warm with 200g