does anyone at least know what is the category of this font?

i searched outline, stripe - no luck.

any help please?

Isn't this a custom font for a football team?

If you are interested in recreating - two fonts come to mind. One is ITC Avant Garde - it's the same shape 3 - you'd need to inline it... or Pinstripe needs a little modification: http://www.dafont.com/pinstripe-limo.font?text=3

Sorry I don't can't come closer to it. I believe Linotype holds this as an exclusive - but, I've been wrong before.

Well, for something similar, check Mexcellent.

thank you very much. i'll try to work with them.