Cipton basketballs cover three jobs. The LED Composite Basketball is a real composite leather ball with LEDs inside that glows from within when you play, so the driveway run keeps going when it gets dark; official 29.5" and youth 28.5", batteries and replacement tool in the box, and it pairs with the LED net or rim light so you can see the hoop. The Silent Basketball is for indoor handles in apartments and upstairs rooms: not silent, a lot quieter, a fraction of the noise of a normal ball. The Elite Pro Composite is the everyday indoor/outdoor ball with deep channels and real grip.