Gaël Rivière explains the differences in blind football on Episode 2 of Rising Phoenix

this ball is a little bit smaller than the uh than the regular football right yeah it's a ball um closer to the ball used in a football in in inside so I'm going to pass this to Michael you guys can hear that there you go when I picked it up earlier it was a lot heavier than I expected and it is heavy it is heavy and um what's inside of that on ball we have small um hon little balls who who move and make S so I always call it a soccer ball so what would you call is it a football is that what how you would say that I say football because we use the word football in because you use your foot because you use your foot that makes sense [Applause] I'm you