What the New Era Partnership Means
Paper Planes builds its structured caps on New Era silhouettes, the 9Fifty snapback and the 59Fifty fitted. That is a manufacturing partnership rather than a branding one, and it decides more about the cap in your hand than the logo on the front does.
It is also why the fit language on this site is New Era's language. A 9Fifty is a 9Fifty whoever puts a logo on it.
What the partnership determines
The silhouette. Crown height, panel count, brim shape and profile are New Era's, not the brand's. That is why a Paper Planes 9Fifty sits the same on your head as any other 9Fifty.
The fit system. Sizing in eighths on the fitteds, the snap closure and its range on the snapbacks. Consistent across everything built on those blanks.
The construction standard. Crown structure and brim stiffness are properties of the blank. It is the reason a structured cap holds its shape rather than relaxing after a season.

Why it matters when you are buying
It means the fit is predictable. If you already know your 59Fifty size, you know your Paper Planes fitted size, that transfers, and it is one of the few things in streetwear sizing that reliably does.
Which New Era fit is which → · How to measure → · The Original Crown →
FAQ
Are Paper Planes hats made by New Era?
The 9Fifty and 59Fifty silhouettes are New Era's, and Paper Planes produces on them in partnership. Other shapes in the line, buckets, dad hats, are not.
Does my New Era size transfer to Paper Planes?
For the fitteds, yes. A 59Fifty is a 59Fifty, so a size you already know should carry over.
What does New Era actually decide?
Silhouette, fit system and construction standard. Materials, colourways and which silhouettes get built are the brand's decisions.