The best ping pong balls are made of celluloid because of its flexibility and bouncing properties. These are great bouncers - made for the carnival trade for fairway games.
We love them because they are lightweight and fantastic for making ornaments. We have been able to punch holes in them with an ice pick, but a non-electric hand drill works nicely, too.
If all else fails, bounce one or two in the bathtub for your kitty cat.
Balls arrive in packages of 3. Five balls pictured for illustration only.