MLB Caps

Wrap a flexible tape measure around your head just above your ears, over the middle of your forehead, and around the widest part of the back — measure 2-3 times to confirm accuracy, then match it to the size chart.

Fitted caps (like the 59FIFTY) come in precise, non-adjustable sizes matched to your exact head circumference, while snapbacks and 9FORTY/9TWENTY adjustable styles use a strap or snap closure for a flexible, one-size-fits-most fit.

Size up — fitted caps, especially wool ones, tend to loosen slightly with wear, so a snug-but-comfortable fit at the larger size usually breaks in better than one that starts too tight.