The Kansas City Chiefs tight end dressed warm for his game-day outfit before taking on the Buffalo Bills in New York on Nov.

When in doubt, layer. That phrase is the secret to unlocking flawless fall ensembles that you can style during work and play.

It’s not quite a crewneck, and it’s not a full turtleneck — the mock neck is the just-right middle ground your fall wardrobe needs, and it’s having a major fall moment right now thanks to its polished ...