Elixir Strings revolutionized guitar strings by finding a way to extend the life of wound strings without compromising the tone. Polyweb coated strings have a balanced tone and smooth response - they sound like strings that have been "played in". Nanoweb coated strings sound and feel like uncoated strings - they are bright and lively, and the coating is so micro thin that you can barely tell it's there. Type: Musical Instrument Accessories