Pro-poly string / Ten (10) Pack of 100% Polyester YoYo String - Neon Green Children, Kids, Game Go to amazon.com Related posts Check expert advices for yoyo strings polyester? Feature10 PACK NEON GREEN YO YO STRINGS FROM THE YO YO FACTORYNEON GREEN100% POLYESTER TYPE 6APPROXIMATE 41"-43" LONG Description10 PACK NEON GREEN YO YO STRINGS FROM THE YO YO FACTORY NEON GREEN 100% POLYESTER TYPE 6 APPROXIMATE 41"-43" LONG