Boysen TL marries rugged utility and luxurious comfort in a bold silhouette that combats the climate with waterproof construction and a cold weather rating of up to -20 degrees Celsius. This lace up boot is designed with 4 eyelets and 2 metal hardware speed hooks with 2nd pop color lace. Fully lined with 17mm UGGpure. The plush UGGpure insole adds warmth, comfort, and natural moisture wicking to this collection. Vildona and foam were added to the insole for additional warmth and comfort. Treadlite By UGG, a lightweight, durable, and non-marking outsole compound that utilizes proprietary RMAT® technology for maximum cushioning, traction, and flexibility.