Quick answer

To find your Hillsboro Hops cap size, measure your head circumference just above your ears and eyebrows using a flexible tape. For a fitted cap like the New Era 59FIFTY, match your measurement to the size chart (e.g., 22 1/4" = size 7). For adjustable caps like the New Era Gray Casual Classic Cap, one size fits most adults with a snapback or strap closure.

How to measure your head for a cap

Use a flexible measuring tape or a piece of string and a ruler. Wrap it around your head about 1/8 inch above your ears, across the middle of your forehead, and around the fullest part of the back of your head. Keep the tape snug but not tight. Write down the measurement in inches or centimeters.

If you are between sizes on a fitted cap chart, try the larger size for a more comfortable fit, especially if you plan to wear the cap for long periods. Remember that fitted caps will not stretch significantly, so accuracy matters.

Fitted vs. adjustable cap sizing

Fitted caps like the New Era 59FIFTY come in specific sizes (e.g., 7, 7 1/8, 7 1/4). They offer a clean, tailored look but require exact head measurement. Adjustable caps, such as the New Era Gray Casual Classic Cap, use a snapback or strap closure to fit a range of head sizes, making them more forgiving and easier to share or buy as a gift.

The Hops x Oregon State University Clean Up Cap from 47 Brand is another adjustable option with a relaxed fit and low crown. Its woven strap allows you to dial in the fit without worrying about exact size numbers.

Hops x Oregon State University Clean Up Cap

Hops x Oregon State University Clean Up Cap

Low crown vs. high crown fit

Low crown caps sit closer to the head and have a shorter profile, which suits people with smaller or narrower faces. The New Era 59FIFTY Low Crown version of the official home cap offers the same structured look with a lower height. Traditional high crown caps have more room above the head and a taller front panel.

If you prefer a modern, sleek silhouette, a low crown cap is likely your best bet. If you like a classic baseball cap look with more structure, a standard or high crown fitted cap may feel more familiar.

How to decide: Fitted or adjustable?

  • Choose a fitted cap if: You want an authentic on-field look and a snug, non-slip fit. The New Era 59FIFTY Low Crown offers a modern silhouette but requires exact sizing. Measure your head carefully and order the corresponding size.
  • Choose an adjustable cap if: You prefer versatility, are buying for someone else, or want a more relaxed fit. The New Era Gray Casual Classic Cap and the Hops x Oregon State University Clean Up Cap both adjust to fit most adults. No measurement needed; just adjust the strap or snapback.
  • Consider low crown if: You have a smaller face or prefer a cap that sits lower on your head. The official on-field cap is already a low crown style. Try it on if possible, or compare the crown height to a cap you already own.

Cap sizing details at a glance

  • New Era 59FIFTY Official Home Cap - Low Crown, Hillsboro Hops: This navy New Era 59FIFTY® low-crown cap is the official home on-field cap of the Hillsboro Hops. Designed with a raised, embroidered Hillsboro Hops team logo on front, stitched New Era logo on left side, and stitched Minor League Baseball® logo on right side. Brand: New Era Style: 59FIFTY Low Crown Color: Navy Official on-field cap for the Hillsboro Hops. Available option types: Size. This fitted cap requires you to know your exact head size. The low crown design changes the fit profile, so if you are used to a standard 59FIFTY, expect a lower, closer fit.
  • New Era Gray Casual Classic Cap, Hillsboro Hops: Show your Hillsboro Hops pride with this New Era Gray Casual Classic Cap. Designed in a versatile gray and black colorway, this adjustable cap offers a comfortable, customizable fit for everyday wear. Adjustable closure allows for a personalized fit. Classic casual style from trusted brand New Era. Gray and black color scheme complements a variety of outfits. Great for men and unisex fans of the Hillsboro Hops. Because it is adjustable, you do not need a precise head measurement. One size fits most adults, making it a flexible choice for gifting or if you are between fitted sizes.

Which cap fit is right for you?

Best for

  • Fans who want an exact, tailored fit and the authentic on-field look (choose New Era 59FIFTY Low Crown fitted)
  • Fans who prefer a casual, one-size-fits-most cap for everyday wear (choose New Era Gray Casual Classic adjustable)

Not ideal for

  • People who dislike the feel of a snug fitted cap or who have a head size outside the typical fitted range (choose adjustable instead)