It's the equivalent of an authentic. Supposedly an exact replica (though not like the replica jerseys with screened on numbers) of the jersey's they wear on the field, though not necessarily cut the same way. They have sewn numbers and are generally heavier. Real game worn jerseys are often longer, can have shorter sleeves, are sometimes narrower, or may have velcro on the bottome to keep them from pulling out of the pants. And if you're really lucky...it's grass stained. lol