What age do boys start wearing protective cups?

Answer 1

A "cup" (groin cup) which fits into a jockstrap, protects the testicles from getting hit and injured.

Boys are very easy to injure in this area. During contact sports it is a good idea to protect your balls from getting smashed since the pain is incredibly bad and you don't want to be unable to get a girl pregnant later.

Answer 2

It's not the age, it's the activity. The gym teacher or coach will tell them to buy it.

Answer 3

I would say no.

Soccer is a sport where there isn't much body contact, and if somehow a ball would hit him, I don't think it would be powerfull enough to do any kind of damage.