I clicked around https://www.youtube.com/watch?v=h4qCVWejYrA https://www.youtube.com/watch?v=h4qCVWejYrA to see people playing and holding a "16 inch softball".

I clicked around https://www.youtube.com/watch?v=h4qCVWejYrA https://www.youtube.com/watch?v=h4qCVWejYrA to see people playing and holding a "16 inch softball". It took me awhile to realize that it's the circumference too.