Coated Strings are acoustic guitar strings that have a special protective layer over the metal windings, which helps to prevent corrosion and extends the lifespan of the strings. Coated Strings are available in gauges from custom light to medium, with Elixir's stellar Nanoweb coating, and in sets for 6 and 12 string acoustic guitars. These strings are designed to offer a brighter, longer-lasting tone and improved playability compared to traditional uncoated strings.