Men's Coldpack 3 Thermo Tall Zip Waterproof - Earth - 037201A 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 Waterproof full grain leather upper, complete with a waterproof membrane seals out water and lets moisture escape Vibram Arctic Grip All Terrain