"Men's Merrell® Coldpack 3 Thermo Mid Waterproof: When winter weather turns serious, the Coldpack 3 Thermo Mid Waterproof keeps your feet dry, warm, and stable on snow, ice, and wet terrain. This winter boot combines a waterproof upper with 200 grams of synthetic insulation and a fleece lining to lock in warmth when temperatures drop. The Vibram® Arctic Grip outsole delivers aggressive traction designed specifically for winter conditions, while the bellows tongue and protective rubber toe cap keep debris and cold air out. If you need reliable winter footwear for hiking, commuting, or everyday cold-weather adventures, this boot handles variable conditions without compromise.The construction prioritizes both protection and comfort. A waterproof membrane seals out moisture while allowing your foot to breathe, and the full grain leather and mesh upper resists abrasion. Underfoot, the SOLARCORE® Aerogel insole provides exceptional warmth while staying thin and flexible, so the boot doesn't feel bulky. The Merrell Air Cushion in the heel absorbs impact and adds stability, while the Super Rebound Compound midsole smooths out the transition from heel to toe. Recycled materials throughout - from the fleece lining to the mesh footbed cover and laces - reduce environmental impact without sacrificing performance. Cleansport NXT™ treatment naturally controls odor, keeping your feet fresh during long days in the cold.Why Our Fit Experts Love This Shoe""I took these out on a snowy hike and immediately felt the difference the Arctic Grip made on icy sections. The boot stayed comfortable all day, and my feet stayed warm and dry even when we hit wet patches. The fit is solid right out of the box."" - Dave, Road Runner Sports Fit Expert, San Diego, CAWho It's Best ForIf you need a waterproof winter boot for hiking, trail walking, or cold-weather commuting, the Coldpack 3 Thermo Mid Waterproof is built for serious winter conditions. It's ideal for anyone who wants aggressive traction on snow and ice, reliable waterproof protection, and genuine warmth without excess bulk. VIP Family members can take the Men's Merrell® Coldpack 3 Thermo Mid Waterproof for a 90-Day test drive with our Perfect Fit Guarantee."