Quick Answer
If you want a classic structured cap for warm-weather games, go with the 39THIRTY Flex Fit. If you prefer a cozy knit beanie for cooler days, the 2Tone Knit Cap is your pick.
Marvel Meets Minor League Baseball
Both caps are part of Minor League Baseball’s official Marvel’s Defenders of the Diamond program. Each features a unique logo designed by a Marvel animator, giving you an exclusive Buffalo Bisons look that blends baseball pride with superhero fandom.
Trade-Offs at a Glance
- 39THIRTY Flex Fit Cap: Structured, stretch-fit cap with a pre-curved brim. Best for sunny days, active wear, and a classic baseball silhouette. Priced at $22.78 (down from $34.00).
- 2Tone Knit Cap: Soft knit beanie with a cuffed design and colorful Marvel logo. Best for chilly weather, casual style, and a snug fit. Priced at $18.90 (down from $30.00).
- Key Difference: The Flex Fit cap is adjustable via stretch fabric; the Knit cap is a one-size beanie that stretches naturally. Choose based on season and head-covering preference. Consider your local climate and how often you'll wear it before deciding.
Product Facts
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Buffalo Bisons Marvel’s Defenders of the Diamond 39THIRTY Flex Fit Cap: New Era MiLB Store Exclusive with a structured fit and stretch fabric. The 39THIRTY Flex Fit Cap offers a secure, one-size-fits-most fit that works well for active wear and warmer weather.
Buffalo Bisons Marvel’s Defenders of the Diamond 39THIRTY Flex Fit Cap
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Buffalo Bisons Marvel’s Defenders of the Diamond 2Tone Knit Cap: Dark Royal with Icy Blue colorway, designed as a knit beanie-style cap. The 2Tone Knit Cap provides warmth and a relaxed, casual look, making it ideal for cooler temperatures and laid-back outings.
Buffalo Bisons Marvel’s Defenders of the Diamond 2Tone Knit Cap
Which Cap Fits Your Style?
Best For
- Fans who want a traditional baseball cap for game days and warm weather
- Collectors who prefer structured, stretch-fit caps with a brim
Not Ideal For
- Those needing a winter-weight hat for cold temperatures
- People who dislike the snug fit of a flex-fit cap




