Our Plushh formula is the one that started it all. Made from a blend of polyester and nylon thread, Plushh strings are soft and fun, a natural evolution from basic bulk polyester string. Plushh won't feel drastically different from what you're used to, but instead it's an upgrade, taking polyester string and tuning it to perfection while adding nylon to make the string slightly more dense and more whippy than bulk strings.