How big are casaba melons?

I've been hearing people say for years something that has to do with a casaba melon. Some people in films and sitcoms or people in real life would mention about women with breasts big as casaba melons, that a casaba melon has a tough outer material or that a casaba melon could be compared to a ball we bounce around in a sport we play in general. So I want to know, how big is a casaba melon? I know what one looks like but how big are they? Here's a video link below that is a reference.

https://www.youtube.com/watch?v=4tBkFN6dXwI

This one casaba melon in the link above. How big is this one?