Flexfit 6511 vs Flexfit 110: Fitted Trucker or Adjustable Hybrid?

The short answer: both are structured, mid-profile mesh truckers from the same maker — the difference is the back of the hat. The Flexfit 6511 has a closed, stretch-fitted back: the cleanest trucker silhouette, sized to your head, no snap. The Flexfit 110 combines the stretch band with an adjustable snapback closure: one hat that fits nearly everyone and fine-tunes on demand. Choose the 6511 for the classic closed-back look in your size; choose the 110 for universal fit, adjustability, and gift-proof sizing. Here's the full breakdown — specs, fit behavior, styling, and the one clarification most searchers need (no, the Flexfit 110 is not the Richardson 110).

First, the Name Confusion (Flexfit 110 ≠ Richardson 110)

Search this matchup and half the results compare the Flexfit 6511 to the Richardson 110 — a different company's R-Flex trucker that happens to share the number. This guide is the intra-brand comparison: Flexfit's own 6511 vs Flexfit's own 110 tech line. (Quick word on the Richardson if that's what you came for: it's a two-size stretch trucker very similar in spirit to the 6511; the decision below between fitted and adjustable applies to it the same way.) Within Flexfit's family, "110" isn't a random model number — the line is named for fitting ten sizes and everything between, via its stretch-plus-snapback design. That's the entire fork in the road.

The Spec Table

The Real Decision: Closed-Fitted vs Adjustable Hybrid

The 6511's case is aesthetic and feel: a closed stretch back gives the cleanest trucker silhouette there is — no plastic snaps, no gap, just an unbroken band that hugs like a fitted cap while flexing like an elastic one. It looks slightly more finished from every angle and never needs adjusting because it can't be adjusted. The trade-offs follow directly: your head has to live within the size range (the newly added S/M and L/XL options in select colors help the edges of the curve), there's no loosening it over thick hair or on hot swollen-head days, and no ponytail is passing through a closed back.

The 110's case is universality: the stretch band gives the fitted feel, the snapback gives the escape hatch — loosen it over a beanie-day hairstyle, tighten it after a haircut, hand it to literally anyone and it fits them. The snap opening also does ponytail duty. The trade-offs mirror the 6511's virtues: the back shows a standard snapback opening (a look, not a flaw — but a different look), and purists find any snap less clean than a closed band.

The honest tiebreakers: buying for yourself with a normal-range head and you love the clean back → 6511. Buying as a gift, for a very large or small head, for anyone who wears their hair through a cap, or for someone who fidgets with fit → 110. There is no quality difference — same maker, same structure tier, similar price. It's genuinely just the back of the hat.

Styling and Use Notes

• Both are athletic-legal: mesh backs and structured fronts suit gym, fishing, golf, and yard duty — this pair is the sweat-season wing of the Flexfit lineup, alongside the Delta 180 for the full performance look.
• Customizers: both take front-panel embroidery and patches well; the 110's one-SKU sizing is the small-brand favorite for inventory reasons — the full breakdown is in the blank hats guide.
• Fit-anxious buyers: if hats historically look wrong on you, the mid-profile crown on both is the forgiving height — and Best Hats for People Who Hate Hats covers the rest of that puzzle.
• Choosing between fitted families: if the closed-back feel is winning you over but you want wool-blend polish instead of mesh, that's the 6277 — compared in full against the 6606 trucker in this head-to-head.

Frequently Asked Questions

What's the difference between the Flexfit 6511 and Flexfit 110?

The back of the hat: the 6511 is a closed, stretch-fitted trucker (clean unbroken band, sized to your head, no adjustment), while the 110 combines a stretch band with an adjustable snapback closure (fits nearly any head, fine-tunes on demand, has the classic snap opening). Front structure, profile, and mesh are comparable — the closure is the whole decision.

Is the Flexfit 110 the same as the Richardson 110?

No — same number, different companies. The Flexfit 110 is Flexfit's stretch-plus-snapback line (named for fitting ten sizes); the Richardson 110 is Richardson's R-Flex stretch trucker, closer in spirit to the Flexfit 6511. Most "6511 vs 110" search results compare across the two brands; this guide compares Flexfit's own two models.

Does the Flexfit 6511 come in sizes?

Historically one-size-fits-all covering roughly 6 7/8" to 7 1/2" — and Flexfit has recently added S/M and L/XL options in select colors of the 6511 line, which helps heads at the edges of the OSFA range. If you've found OSFA caps slightly loose or snug, the sized versions are worth seeking out.

Which is better for gifts — fitted or snapback?

Adjustable, almost always: the 110's stretch-plus-snapback design fits nearly every head without knowing a size, making it the gift-proof choice. A fitted 6511 is the better pick only when you know the recipient's head sits comfortably in the standard range — or when the clean closed-back look is specifically their style.

Can you wear a ponytail with these caps?

With the 110, yes — the snapback opening doubles as the ponytail pass-through. The 6511's closed back has no opening, so hair goes under or stays down. For regular ponytail wearers, this single detail usually decides the whole comparison.

Are the 6511 and 110 good for embroidery?

Both — structured, buckram-backed front panels take direct embroidery and patches well, with decoration limited to the front (mesh can't hold stitching). Small brands often prefer the 110 for its one-SKU sizing; the 6511's closed back photographs slightly cleaner for premium product shots. The full customization rundown is in the blank hats guide.

Key Takeaway

Same maker, same tier, one decision: the back. The Flexfit 6511 for the cleanest closed-back trucker in your size; the Flexfit 110 for the universal-fit hybrid with the snapback escape hatch (and the ponytail pass-through). Neither is the upgrade over the other — they're two answers to how a trucker should hold your head, both in stock in the hats collection at Happibee.

Rest of the hat system: the 6277 vs 6606 head-to-head for the wool-vs-trucker fork, blank hats for embroidery for customizers, and the hat-haters guide if the mirror is the obstacle.