The New Nylgut® is the first product developed and patented by Aquila. The New Nylgut® is nor common Nylon or Carbon (Fluocarbon fishing line or PVDF), or a mix of them. It is a plastic compound of three different components. Compared to Nylon, the New Nylgut® produces a better sound and stays in tune better, this because the moisture absorption is less of .1% against the 2.0% of Nylon normally employed for the musical strings (i.e. Du Pont Tynex® polyammide 6-12).