Sperry | Shoes | Mens Sperry Topsider Memory Foam Black 。Sperry Avenue Duck Boots (Model STS18188). This specific model is a men\'s waterproof rain and snow boot featuring a black Cordura nylon upper and a rubber lower shell. Product Specifications Model Number: STS18188. Size (as pictured): USA 13, UK 12, EUR 47.5, CM 31. Materials: Cordura nylon and rubber. Key Features: Waterproof: Seam-sealed construction designed to keep feet dry in wet conditions. Traction: Non-marking lugged rubber outsole with signature Wave-Siping™ technology for enhanced grip on wet and dry surfaces. Warmth: Fully lined shaft with a warm thermal lining. Comfort: Full-length memory foam footbed. Very lightly used condition. Non-smoking home.