Quick answer: The best caps for big heads are sized for heads 23.6 inches (60 cm) and up, which is a hat size 7½ and higher. Most one-size caps top out at about 7⅝. MONGO makes two caps for big heads. The XL Performance Snapback 2.0 ($59.99) has a structured deep-fit crown and perforated side panels. The XL Foam Trucker ($44.99) is a mid-crown, mesh-back trucker. Both fit 7½ to 8½ (23.6–26.7 in / 60–68 cm). Here's how to choose between them.
| Cap Style | Crown Profile | Ventilation | Price | Best For |
|---|---|---|---|---|
| XL Performance Snapback | Deep-fit crown | Perforated side panels | $59.99 | Everyday wear, gym, most color options |
| XL Foam Trucker | Mid crown | Mesh back panels | $44.99 | Classic trucker look, warm weather, budget-friendly |
XL Performance Snapback Cap
The Performance Snapback is MONGO's deep-fit cap. Its structured crown is deeper than a standard snapback, which makes it the pick if your caps usually sit too high. Perforated side panels keep it breathable for the gym or outdoor wear, and it comes in the widest range of colors: black, gray, navy, royal blue, beige, white, and green.
XL Foam Trucker Cap
The Foam Trucker is Mongo's mid-crown cap — a classic trucker-style build with a foam front panel and mesh back for warm-weather breathability, at a lower price point. It's the more laid-back, casual pick between the two styles. Available in black and green.
Sizing: Both caps fit 7½ through 8½ (23.6–26.7 in / 60–68 cm). Use the hat size calculator to check yours. If you're not sure of your size, see our full FAQ on hats and caps for big heads or the printable size chart.
FAQ
Do you sell caps, or only hats?
Both. Every MONGO style is an extra large baseball cap built for big heads, so "hat" and "cap" mean the same lineup here.
What size cap do I need for a big head?
If your head measures 23.6 inches (60 cm) or more, you're a 7½ or bigger and need a cap sized XL or 7½–8½. Not sure? Use the hat size calculator.
Which MONGO cap fits the biggest heads?
Both fit the same range, 7½ to 8½ (up to 26.7 in / 68 cm). The XL Performance Snapback 2.0 has the deeper, more structured crown. Pick it if your problem is caps that sit too high.
What's the difference between the two styles besides price?
Crown and ventilation. The Performance Snapback 2.0 has a structured deep-fit crown, a flat brim and perforated side panels. The Foam Trucker has a mid crown, a foam front and mesh back panels.
What if the cap doesn't fit?
US shipping is free, and the 30-day fit guarantee covers return shipping on unworn caps with tags. If you measure under 23.6 inches, you probably don't need an XL cap.
