It's classic for a reason. Crafted for all-weather comfort, the Men's Timberland® Classic 6-Inch Waterproof Boot is made with waterproof Premium Timberland® leather and a seam-sealed construction to help keep your feet dry, featuring 400 grams of lightweight PrimaLoft® insulation for warmth. Complete with a steel shank for arch support and a rugged rubber lug outsole for traction, it's ready for your next adventure. By purchasing this product, you are supporting Leather Working Group certified tanneries https://www.leatherworkinggroup.com/ PrimaLoft® insulation is a soft, lightweight compressible down alternative insulation. It uses a patented microfiber structure to help retain warmth, even if the fibers get wet - helping you stay dry, warm and comfortable. Waterproof seam-sealed footwear includes waterproof leather for durable waterproof protection. Our waterproof footwear incorporates a variety of advanced waterproofing materials, treatments and processes. We start with waterproof leathers that are sealed as part of the tanning process; we then either seam-seal the footwear or use an internal waterproof breathable membrane to help feet stay dry. Tongues and zippers treated with durable water resistant coatings utilize integrated gussets, to further deter water entry.