What we like in the store is the softness of the reference. An Ebbets cap can add colour or lettering to an outfit, but it does not feel like a loud logo piece. The wool gives it texture, the crown has a different attitude from a modern sports cap, and the graphics feel found rather than newly invented.
That makes Ebbets an easy bridge between headwear, denim, workwear and outer layers. A good cap changes the top line of an outfit immediately, but the right one should still feel like it has always been there. Ebbets works because the nostalgia is specific, not sentimental, and because the caps carry character without becoming a costume detail.