Football fans (and Swifties), start your engines.

After her custom Chiefs puffer jacket for Taylor Swift made her a viral sensation, DIY designer and 49ers WAG Kristin Juszczyk has teamed up with fashion entrepreneur Emma Grede to launch Off Season, a line of stylish sports apparel available starting today at Fanatics.

Fittingly, the brand’s debut drop consists of unisex puffers strikingly similar to Swift’s that celebrate five NFL teams: the San Francisco 49ers, Philadelphia Eagles, Detroit Lions, Buffalo Bills and, yes, Kansas City Chiefs.

“She single-handedly changed my career. I feel like I owe her everything, truly,” Kristin previously told Page Six Style of Swift.

“It was such a pinch-me moment seeing her wear something of mine, and it just completely changed the trajectory of everything that I was doing. She opened up so many doors for me. And she looked amazing!”

In addition to the “All Too Well” songwriter, Kristin — who’s married to 49ers fullback Kyle Juszczyk — has outfitted stars like Simone Biles, Olivia Culpo, Caitlin Clark and Natalia Bryant in her creations, which have never been available for purchase until now.

“From day one, my dream has always been to design gear that lets each team’s fans represent in style, and I can’t even begin to tell you how thrilled I am that the moment has arrived!!” Kristin wrote on Instagram last week of her long-anticipated line’s launch.

“Off Season is all about redefining the intersection of football, sports, and fashion — and I promise you, I poured everything I have into making sure this brand delivers the quality and designs you all deserve!!”

The 49ers WAG also assured fans that she’s “working hard to make sure all 32 teams are represented in the future.”