Adjustable hook-and-loop strap for a perfect ankle fit. Adjustable collar drawstring lacing for a perfect calf fit. Removable felt lining keeps feet toasty warm. TPR outsole is lightweight and provides traction in wet winter conditions. Temperature rated to -25ÂºF/-32ÂºC. Made in Canada. Tundra boots have been an established name for more than 30 years. They are produced with strong and durable materials to protect you from the winter elements. They all come with 100% waterproof bottoms and a number of colors and outstanding styles.