Elixir strings have been one of the most trusted and utilized coated strings for guitars since 1997.  Years of development and testing has culminated into their original POLYWEB® Coating and ultra-thin NANOWEB® Coating strings for acoustic and electric guitar, bass, mandolin, and banjo.  Every set has a microscopically thin, advanced polymer tube that surrounds the string to protect it from corrosion and dirt without making any contact whatsoever with the critical area between the windings.  Players using Elixir strings report that their tone lasts longer than any other string, uncoated or coated.