https://www.polygon.com/fortnite/2019/1/29/18202284/fortnite-nfl-skins-super-bowl-liii-rams-patriots

Last year, during the NFL regular season, Epic Games partnered with the National Football League to release official team uniforms as cosmetics items inside Fortnite.

The items were wildly successful, but, as with all Fortnite cosmetics, they were only in the store for a brief time. Now, Epic is bringing the NFL uniforms back for a limited time. In celebration of their trip to Super Bowl LIII the Los Angeles Rams and the New England Patriots will also be getting a new white version of their uniforms to commemorate their trip to the big game.