In competitions? At boxing gyms?

I'm skinny and get cold a lot, even when exercising my legs get cold. My upper body is fine but my lower isn't.

you can wear anything in practice, and I have seen boxers wear sweats in fights.

I guess it depends on the competition and if anyone cares.

Do whatevea u want if u get cold then yea I guess that would be common sense

Depends, can you box?

Sure

In competitions? At boxing gyms?

I'm skinny and get cold a lot, even when exercising my legs get cold. My upper body is fine but my lower isn't.