HTS code 9902.14.01 covers "Footwear for men with outer soles and uppers of rubber or plastics, such uppers of neoprene measuring 7 mm in thickness, injected with polyurethane on the exterior and covered with knitted fabric wholly of polyester on the interior, with rubber lug bottoms laminated with cement to the upper; such footwear covering the ankle, whose height does not exceed 35.56 cm; waterproof, valued not over $36/pair and designed to be permanently affixed to fishing waders (provided for in subheading 6402.91.50) " under the US Harmonized Tariff Schedule. This is the official duty rate charged by US Customs when this product is imported into the United States, sourced directly from the U.S. International Trade Commission and refreshed daily.