40 Yo-Yo String (10 Each - Florescent Lime Green, Yellow, Orange and White)
This is premium Type 6 100% Polyester yo-yo string Ultra bright!
Works with all Yo-Yos.
Yo-yo string should be changed periodically. Manufacturers generally recommend changing the string after about 30 minutes of play time, or if the string becomes frayed.
Non-bearing yo-yos will wear out the string quicker.