Lanikai Strings for Tenor Ukulele by Aquila - Nylgut (R)

From Lanikai:

These high quality ukulele strings from Lanikai use the Nylgut(R) formula patented and manufactured exclusively by Aquila Corde Armoniche Srl in Italy. The Nylgut(R) strings are a high-tech products produced with unmatched precision and consistency, resulting in best tonal quality and highest intonation stability even under changing environmental conditions, which is why they are the best choice for Lanikai ukuleles.