What's the difference between NANOWEB® Coating and POLYWEB® Coating? The difference between our coating ‘flavors’ is found in the tone and feel of the strings. Strings with NANOWEB® Coating 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. Strings with POLYWEB® Coating have a balanced tone and smooth response – they sound like strings that have been ‘played in’. In addition, POLYWEB® Coating feels comfortably smooth and helps reduce finger squeak. back to FAQ...