Former undisputed heavyweight champion Mike Tyson means business. 

The 58-year-old Tyson has already arrived at AT&T Stadium in Arlington, Texas for his scheduled heavyweight bout against Jake Paul, and he added to the immeasurable hype for that fight by simply showing up in the building wearing an incredibly cool jacket that's leaving people on the internet buzzing non-stop.

The jacket featured huge texts that read "IRON MIKE TYSON" on the back along with an artistic rendition of one of his most iconic photographs during his heydays inside the ring.

The jacket speaks for itself: Tyson is indeed, ready for war.

"Mike Tyson’s jacket goes hard #PaulTyson," posted a fan.

"Mike Tyson arriving in an "Iron Mike" jacket is the definition of AURA!" shared another online user.

Another one said: "Tyson pulled up in the custom Iron Mike jacket. Jake Paul is (expletive)"

From a different commenter: "Okay this is a fire ass jacket"

"Jake Paul shows up to the arena on some Rick “The Model” Martel shit. Tyson wearing a leather jacket with his name and likeness on it. In other words? Everybody is getting to do their stuff," chimed in another commenter

What's scarier, though, is what is beneath that jacket. Tyson is in his best shape in several years, as evidenced by his appearance during the controversial weigh-in on Thursday where he gave Paul the "slap heard 'round the world."