The best-selling winter duck boot by SPERRY provides the ultimate combination of comfort and style. Feet stay warm and dry thanks to its microfleece lining and waterproof rubber shell. Looks just as good with ski pants as it does with a pair of jeans. Details Waterproof rubber shell Microfleece-lined with 200g Thinsulate for added warmth Non-marking rubber lug outsole with Signature Sperry molded Wave-Siping™ for enhanced traction