there is no law infringment if you already own a copy of the print ( say you bought the jacket or a poster etc…) you can have it reproduced as long as it is still for your personal use.
What you cannot do is
pick the picture on the net
Take a photograph of it
Borrow it from a friend
Scan it from something that doesn’t belong to you
and reproduce it because either you or the guy lending the stuff or both of you are infringing copyrights.
you cannot also alter the picture in anyway and then reproduce it unless you have been given the right to do so.
You also cannot publish anywhere the picture (technically that includes posting a photo of your ware with the copyrighted picture on these forums)
now if you want to make things right ask the guys who have the copyright:
They say yes, and everybody is happy
They say gimme 150$ so they are a bunch of mean ignorant bastards so you don’t want their shit on your gear anymore.
Alternately you could go to some shop where they don’t give a flying shit about all that as long as you don’t ask for hundreds of copies.