Création treble strings are a mix of: New Cristal Nylon made of improved high quality nylon used for the E1 and B2 - focused and clear sound. Alliance fluorocarbon (so called carbon string) used for the G3 string. Thin string offering a clear and brillant sound, focused and clean associated to perfect projection and easy playing. They all are perfectly in tune. Le plus Cantiga: The famous strings produced with the latest improved raw material and the newest high technology machinary necessary for a specifically accurate production process.