A versatile winter boot to keep you dry and delivers traction in any conditions mother nature can throw at you. 200 grams synthetic lightweight, low bulk insulation for warmth and comfort. Complete with SOLARCORE® Aerogel insole provides underfoot superior warmth while being extremely flexible and ultra-thin. Vibram® Arctic Grip™ All Terrain outsole designed to effectively extend the winter traction season, due to the enhanced durability and versatility.