The real decision: snapback adjustability or flex-fit sizing

These two Buffalo Bisons caps look similar on the rack, but they solve fit in opposite ways. The New Era 940 Player Replica is a structured adjustable cap with a plastic snap strap in back. The New Era 3930 is a flex-fit cap offered in S/M, M/L and L/XL. If you want to fine-tune the band every time you put it on, the 940 gives you that control. If you prefer to pick a size once and skip the strap, the 3930 is the simpler choice.

The 3930 is the flex-fit version of the Bisons On-Field Hockey Night cap worn at the ballpark in 2024 and scheduled to be used again in 2025. The 940 is the structured adjustable version of the Bisons Alt 2 On Field hat. Both are officially licensed MiLB products, so the difference is in how they fit, not in licensing or team identity.

Side-by-side fit and construction

  • Closure: 940: adjustable plastic snap strap in back. 3930: flex fit with no adjustable strap, sold in S/M, M/L and L/XL.
  • Crown structure: 940: described as a structured adjustable MCrown Player Replica cap. 3930: described as a flex-fit New Era 3930 cap; the supplied record does not specify crown structure.
  • Sizing approach: 940: one standard variant with an adjustable strap. 3930: three size ranges, so you choose a band size rather than tightening a strap.
  • Design source: 940: Alt 2 On Field hat. 3930: Hockey Night at the ballpark design worn in 2024 and planned for 2025.
  • Licensing: Both: officially licensed MiLB product.

What the 940's adjustable strap means for daily wear

The 940's plastic snap strap lets you loosen or tighten the cap without committing to a fixed size. That is useful if your head falls between sizes, if you sometimes wear your hair up, or if you share a cap with someone whose head is close to yours. The structured MCrown build is designed to hold its shape, which suits fans who like a cap that sits crisp rather than slouchy.

The trade-off is that every wear starts with a small adjustment. If you dislike fiddling with a strap or want the same fit instantly, a flex-fit cap removes that step. Also note that the 940 is listed as a single standard variant; the supplied information does not confirm additional sizes or colorways beyond the Alt 2 design.

940 Player Replica: verified details

When the 3930 flex fit is the better pick

The 3930 comes in three size ranges: S/M, M/L and L/XL. That structure suits fans who already know their New Era flex-fit size and want to put the cap on without adjusting anything. Because it is the flex-fit version of the Hockey Night cap, it also appeals to fans who want that specific ballpark design rather than the Alt 2 look.

The main limitation is sizing risk. If you are between sizes or have never worn a New Era 3930, you cannot tighten or loosen the band the way you can on the 940. The supplied record does not include a size chart or head measurements, so use your existing New Era flex-fit size as your reference point. If you have no such reference, the 940's adjustable strap is the lower-risk choice.

3930 Hockey Night: verified details

  • Buffalo Bisons Hockey Black Stripe 3930 Cap: New Era 3930 flex fit cap offered in S/M, M/L and L/XL Shows that fit is chosen by size range, not by an adjustable strap.

    Buffalo Bisons Hockey Black Stripe 3930 Cap

    Buffalo Bisons Hockey Black Stripe 3930 Cap

  • Buffalo Bisons Hockey Black Stripe 3930 Cap: Flex fit version of the Buffalo Bisons On-Field "Hockey Night" cap worn for Hockey Night at the ballpark in 2024 and to be used again in 2025 Identifies the design and its on-field connection, which is the main reason to choose this cap over the Alt 2.

  • Buffalo Bisons Hockey Black Stripe 3930 Cap: Officially licensed MiLB product Confirms team licensing, matching the 940 on that point.

How to choose between them

  • Choose the 940 if you want adjustable fit: The plastic snap strap lets you tighten or loosen the cap, which helps if you are between sizes or prefer a structured crown.
  • Choose the 3930 if you know your flex-fit size: Pick S/M, M/L or L/XL based on your existing New Era 3930 fit and skip the strap entirely.
  • Choose by design if fit is equal: The 940 carries the Alt 2 On Field look; the 3930 carries the Hockey Night design worn in 2024 and planned for 2025.
  • When in doubt, size down risk with the 940: Without a 3930 size chart in the supplied information, the adjustable 940 is the safer first purchase if you cannot try either cap on.