Nite Ize Glowstreak L.E.D Ball Enter your model number above to make sure this fits. The Gear Tie Clippable Twist Tie allows you to clip, twist, store, and hang tools or gear for convenient storage and access Features a #2 Plastic S-Biner and 12" Gear Tie Reusable Rubber Twist Tie Attach it nearly anywhere to keep items of all kinds right where you need them Unique, durable L.E.D. light up ball - allows fun and exercise to continue into the night Daytime and nightime throwing, juggling, catching Size of a tennis ball - fits most ball throwers Water Resistant - Floats Press and hold to turn on/off Kindly refer the user manual attched for instructions.