Men's ColdPack 3 Thermo Moc WP Black Brooks Breathable and Quick Drying: Keeps your R7674 02 Breathable and Quick Drying: Keeps your feet cool and dry during all your adventures and a comfortable With 200 grams of insulation and a fleece lining your feet will stay warm when the temperatures dip low bulk insulation for warmth and comfort• SOLARCORE® Aerogel insole provides underfoot superior warmth while being extremely flexible and ultra thin• 100% recycled mesh footbed cover• Cleansport NXT™ treated for natural odor control• 5% recycled PU removable footbed• Merrell Air Cushion in the heel absorbs shock and adds stability• Molded nylon arch shank• Super Rebound Compound midsole provides durable shock absorption to help reduce torque and allow for a smooth transition into the midfoot• Vibram® Arctic Grip™ All Terrain outsole designed to effectively extend the winter traction season