MAGICYOYO Yoyo Strings Glow in The Dark White: 100% Polyester Professional Luminous Yo-yo Trick Use, Responsive Unresponsive, Pack of 25

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. MagicYoyo yo yo String ...