9Fifty vs 59Fifty vs 9Forty: Which New Era Fit
The short version: a 9Fifty is an adjustable flat-brim snapback, a 59Fifty is a sized fitted cap with no closure, a 9Forty is an adjustable curved-brim strapback, and a 9Twenty is an unstructured dad hat. Paper Planes, the streetwear brand founded by JAY-Z under Roc Nation, builds its structured headwear mainly on the first two, with the A-Frame as the shallower third option.
The numbers are New Era's own product designations, not sizes, which is the part that trips people up. They describe the shape and closure of the cap. Only the 59Fifty is sized to your head.
The four fits compared
| 9Fifty | 59Fifty | 9Forty | 9Twenty | |
|---|---|---|---|---|
| Type | Snapback | Fitted | Strapback | Dad hat |
| Closure | Plastic snap | None, sized | Adjustable strap | Adjustable strap or buckle |
| Brim | Flat | Flat | Curved | Curved |
| Crown | Structured, high | Structured, high | Soft, mid | Unstructured, low |
| Sizing | One size | Sized to your head | One size | One size |
| Panels | 6 | 6 | 6 | 6 |
| Buy it if | You want the classic and don't want to measure | You know your size and want the cleanest line | You prefer a curved brim that still holds shape | You want the softest, least structured look |
Which one should you buy
If you have never measured your head, buy a 9Fifty. It adjusts, it fits almost everyone, and it is the silhouette the Original Crown is built on. Almost nobody regrets a snapback for fit reasons.
Buy a 59Fifty when you know your size. A fitted has no closure, so nothing interrupts the back of the cap, it is a cleaner silhouette, and it is why fitteds are the collector's format. The cost of that is that a fitted in the wrong size cannot be rescued. Measure first: how to measure your head.
Choose a 9Forty or 9Twenty for a softer look. Curved brim, less structure, lower profile. They read casual where a flat-brim 9Fifty reads deliberate.

Where the A-Frame fits in
The A-Frame is not a fifth designation, it is a construction: a shallower, snugger crown whose front two panels meet in an A shape, most often built on the adjustable silhouette. It sits between the high structured crown of a 9Fifty and the soft profile of a 9Forty, which is why people who find a standard snapback too tall land on it. Paper Planes runs the shape as its own line: Paper Planes A-Frames.
Why the fit matters more than the number
A structured crown holds its shape whether or not your head fills it, so a 9Fifty sits on your head. A 59Fifty sits around it, which is why crown depth and head shape matter and why two people the same hat size can prefer different fits.
If you are between sizes on a fitted, most people are better off going up: a fraction loose is a hat, a fraction tight is a headache by hour three.
FAQ
What does 9Fifty mean?
It is New Era's designation for their structured six-panel snapback with a flat brim and a plastic snap closure. It is a style name, not a size.
Is a 59Fifty the same as a fitted?
Yes. The 59Fifty is New Era's fitted cap, no closure, sized to your head, flat brim, structured crown.
Which New Era fit does Paper Planes use?
Paper Planes structured headwear is built mainly on the 9Fifty and 59Fifty, with an A-Frame line for the shallower crown. The founding product, the Original Crown, is a 9Fifty snapback.
What is an A-Frame hat?
A cap built with a shallower crown whose front panels meet in an A shape, usually adjustable. Lower and snugger than a standard structured snapback.
Can I adjust a 59Fifty?
No. A fitted has no closure. If you need adjustability, choose a 9Fifty, 9Forty or 9Twenty.
Should I size up or down on a fitted?
Up, if you are between sizes. A slightly loose fitted is wearable; a slightly tight one is not.