Nylgut ukulele strings were invented by Aquila several years ago to offer a modern alternative to traditional gut strings and they have become a huge success-the standard of the industry. The new Super Nylgut strings are our latest upgrade in the field of synthetic gut strings and they offer improved playability with a very smooth and polished surface feeling like a wax treatment. The Super Nylgut Ukulele strings are a distinctive, pearl-color and offer greater tuning stability than ever before