Amazon.com | Baffin Men。Baffin Thunder Winter Boots Bark Brown Leather Wool Liner Men\'s 12 Expedition These are heavy-duty, expedition-grade Baffin boots, perfect for extreme cold conditions. The specific \"Thunder\" model name is visible on the internal size tag (see photo), identifying them as a highly durable Baffin classic These are a discontinued model. Key Features: Model: Baffin Thunder * Color: Bark (Rich Earth-tone Brown) * Size: Mens 12 US * Condition: Excellent Pre-Owned Condition with minimal wear on the leather and soles. Liners are clean and intact. Some light Scruffs on the inside of each heel. * Rating: Rated for extreme cold Technical Specifications: Upper Material: Durable, waterproof full-grain leather tops with speed-lace front fastening. * Insulation: Features Baffin\'s signature removable multi-layer inner boot system (likely an 8-layer design): * Thermaplush soft, next-to-foot comfort layer. * B-Tek Foam insulation for high-loft warmth. * PolyWool Blend for breathability and moisture management. * Outsole: Waterproof Arctic/Polar Rubber shell base remains flexible in freezing temperatures and provides excellent traction. * Origin: Made in Canada