Winter Boots. Outsole and foot in TPR rubber with integrated spur rest, waterproof nylon shank, and inside of calf is lined with polyurethane for a better grip. Terylene inner lining to keep the foot warm and dry in cold weather. Removable insole lined with Terylene. Features a gusset for easy slip on and adjustment. Four self-gripping fastening straps decorated with a reflective stripe.