HTS code 9902.14.56 covers "Detachable footwear gravel guards with uppers of 3 mm neoprene, nylon jersey face and underside, each measuring 17.78 cm or more but not over 20.32 cm in height, with tapered fit, designed to be held to the shoe with a hook-and-loop fastener strip and loop wrap to affix together (provided for in subheading 6406.90.15)" 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.