Premium Timberland Leather: By purchasing this product, you are supporting responsible manufacturing of leather through the Leather Working Group. OrthoLite Insoles: Comfort foam insoles long-term cushioning with ultra-breathable material that won't break down or lose cushioning over time, keeping your footwear comfortable and supportive. Waterproof Seam-Sealed: Seam-sealed waterproof leather for durable waterproof protection with special tanning that repels moisture for waterproof protection. PrimaLoft Insulation: 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. ReBOTL Material: Products with ReBOTL material contain at least 50% recycled PET (recycled polyethylene terephthalate, the stuff plastic bottles are made of) excepting trace materials.