Stop Guessing Your Hat Size: The Complete New Era 59Fifty Sizing Guide

You've probably been wearing a slightly wrong-sized hat without even knowing it. That subtle pressure at your temples after a couple hours? The crown sitting just a little too high off your head? That's a sizing issue — and it's completely fixable. This guide walks you through exactly how to measure your head, read the New Era sizing chart, and lock in the right 59Fifty size before you buy.

The New Era 59Fifty has been the official on-field cap since 1954 — worn by MLB players, hip-hop icons, and collectors who take fit seriously. When it sits right, it frames your face, pulls your outfit together, and just feels like it belongs. When it doesn't, you know it all day. Let's get yours dialed in.

Whether you're repping the Atlanta Braves, the Los Angeles Dodgers, or hunting a vintage-inspired colorway, the size is the foundation. Get it right and every hat you add to your rotation will feel like a custom order.

Understanding New Era 59Fifty Fitted Hat Sizing

Unlike snapbacks or dad hats, the 59Fifty comes in precise fractional sizes — no adjustable strap, no wiggle room. That's the whole point. Each size maps directly to a head circumference measurement in inches, and the range covers most heads from a snug 6 7/8 up to a roomy 8 1/4, moving in 1/8-inch increments. Here's the full chart:

Use this as your starting point, then take your measurement (instructions below) to find where you land. If you're between two sizes, go with the larger one — fitted hats can stretch with wear, but they won't shrink down. You can also use the size calculator at 402fitted.com to double-check your number.

One thing worth knowing: the chart assumes a fairly round head shape. If your head runs more oval — longer front-to-back than side-to-side — your circumference might match the chart but the hat still feels tight across the forehead. More on that below in the fit factors section.

Measuring Your Head for the Perfect Fit

Grab a soft measuring tape — the kind a tailor uses. If you don't have one, a piece of string and a ruler gets the job done. Here's the process step by step:

1. Position the tape: Start just above your ear, roughly 1/8 inch above the top of the ear at the midpoint between the ear and the crown of your head.
2. Wrap evenly: Circle the tape around your head, passing across the center of your forehead and around the widest part of the back of your skull.
3. Keep it level: The tape should stay parallel to the floor all the way around. Any tilt throws off the measurement.
4. Read accurately: Note where the tape overlaps and record the number. Round up to the nearest 1/8 inch — when in doubt, size up slightly.

Two mistakes that'll throw you off: holding the tape too loose (gives you a size too large) or pulling it snug like a tourniquet (gives you a size too small). The tape should sit flat and firm — not tight. If someone can measure for you, even better. It's easier to read accurately when you're not the one holding it.

Once you have your circumference, match it to the chart above. That's your starting size. Try on in person when you can — but with an accurate measurement, online orders usually land right too.

Factors That Influence How a Hat Actually Fits

Your head circumference is the starting point — but it's not the whole story. Here are three things that can shift how a hat actually feels once it's on your head.

Head Shape

Not every head is a perfect circle. If yours runs more oval — longer front-to-back — you might find a hat hits the circumference number correctly but still squeezes your forehead or sits loose on the sides. Before assuming you need a different size, try on a few hats at your measured size. Sometimes it's a shape issue, not a size issue, and going up a size just creates a different problem.

How You Like to Wear It

Some collectors want a fitted that locks in firm — stays put through a full San Diego Padres game in the wind. Others prefer a slightly looser feel with a bit more airflow, which makes sense for a sunny afternoon at the Miami Marlins ballpark. Neither preference is wrong. Just know yours before you order, because fitted hats don't come with an adjustment dial.

Hat Stretch

New Era hats — especially wool ones — will loosen slightly with regular wear. The fibers relax and start conforming to the contours of your specific head. If a new hat feels just a touch snug out of the box, give it a few wears before you write it off. It may be exactly the fit you wanted after a week of regular use. That said, if it's genuinely uncomfortable from day one, go up a size rather than forcing it.

Achieving the Ideal Fit

You've got your size. Now make sure the hat is actually doing what it should when you put it on.

First Time On: What to Check

When you first put on a 59Fifty — whether it's a clean MLB style or something from the Pink Under Visor collection — here's what a correct fit feels like: the cap sits comfortably above your ears, the crown touches the top of your head without pushing down on it, and there are no pressure marks on your forehead after wearing it for 10 minutes. It should feel secure without any squeeze.

When It Feels Slightly Off

If the hat is a touch snug, wearing it in is usually the move — especially with wool. A few regular wears and the material will conform to your head shape. For hats that run a bit loose, hat-sizing tape or foam inserts placed under the sweatband are the cleanest fix. They're inexpensive, nearly invisible, and can tighten a hat that's half a size too big without stretching out the crown.

Troubleshooting Common Fit Problems

• Hat rides up or keeps slipping: Usually means it's too big. Try a size down, or use hat-sizing tape to snug up the sweatband.
• Pressure at the temples or forehead: Usually means it's too small. Give it a few wears — if the discomfort doesn't ease, go up a size.
• Pressure at one specific point: Check that you're not wearing it too low on your head. Also consider whether your head shape is better served by a different construction — the MLB collection has a wide range of builds that can help.

Every 59Fifty tells its own story — from the vibrant colorways of the Colorado Rockies to the clean classic look of the New York Mets. Getting the fit right is how you make that story yours.

Caring for Your 59Fifty

A well-fitted hat is an investment. Taking care of it keeps it looking fresh and feeling right wear after wear.

Keeping the Shape

Store your fitted away from direct sunlight to prevent color fade. A hat box or a hat rack is ideal — anything that lets the crown hold its form when you're not wearing it. For special editions from collections like Autumn Vibes, be especially careful about crushing or stacking. Once a structured crown gets bent, it's hard to bring back.

Cleaning by Material

For cotton and polyester hats, a damp cloth and mild detergent handles most stains. For wool hats — including heritage styles like those celebrating the St. Louis Cardinals — use a soft-bristled brush to knock off dust and a lightly damp cloth for stains. Always cold water. Hot water shrinks wool and will throw off your fit.

The Three Golden Rules

1. Never submerge: Soaking a fitted distorts the shape and can ruin the brim structure. Spot clean only.
2. Avoid harsh chemicals: Bleach and strong cleaners damage fabric and cause colors to bleed — especially on vibrant styles from the MiLB collection.
3. Air dry only: Let it dry naturally, set over a form or lightly stuffed to maintain the crown shape as it dries. Never a dryer.

Ready to Shop? Find Your Team.

Now that you've got your size locked in, put it to work. Browse the full fitted hat collection at 402fitted.com — filter by team, colorway, or style and find the one that's been waiting for you. Not sure where to start? The best sellers are always a solid first move.

The Right Fit Changes Everything

A 59Fifty that fits correctly isn't just more comfortable — it looks better, sits better, and holds up better over time. Whether it's a Dodgers cap for game day or something from the Pink Under Visor collection for everyday wear, the fit is what separates a great hat from one that just sits on your shelf.

Measure once, get it right, and you'll never second-guess a size again. And if you ever need a quick reference, the size calculator is right there to back you up.

Ready to find your fit? Shop the full 402fitted collection →

Further Reading