The Hendren TL marries rugged utility and luxurious comfort in a bold silhouette that combats the climate. This boot is made with waterproof construction and is cold weather rated to -20 degrees Celsius. Seam sealed construction. Fully lined with 17mm UGGpure. Medial zipper for easier foot entry. Insole: Plush UGGpure adds warmth, comfort, and natural moisture wicking to this collection. Vildona and foam were added to the insole for additional warmth and comfort. Outsole: Treadlite By UGG, a lightweight, durable, and non-marking outsole compound that utilizes proprietary RMAT® technology for maximum cushioning, traction, and flexibility.