120 (100 + 20 Bonus) Premium Neon Yellow Yo-Yo Strings - 100% Polyester yoyo strings by Yocala. $11.95. Made from durable, high-quality polyester materials, these strings are made to last longer, accommodate a wider range of player heights, and fit most yo-yos! *Measured without finger loop tied. The finger loop comes untied for easier adjustment. Instructions are included on how to do this and more.