Because Dex is Batty: Unbreakable Bats that Don't "Ping"
I finally found the web site that has the new bats that act like wood bats, but don't break. I also found the article above that talks about someone else who claims he "invented" a bat that is able "to take that aluminum 'ping' out of youth baseball and the broken bat out of the national pastime, while making the game a little safer with every swing. "