I did once find a Coleman adrenaline jersey on PRIDE's Japanese store, but it's not on there anymore.
Edit: Hunting around I did see some Adrenaline brand athletic stuff but all of the stores were out of stock or no longer carried it, I think Gameness is right and they're out of business. I can't even think of the brand Fedor has worn in his last few, gotta go check out the TK massacre