Flexfit Hat Size Chart: Getting the Fit Right
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The Flexfit hat size chart confuses people because it looks like fitted sizing and behaves like something else entirely. A fitted cap has one circumference.
A Flexfit size covers a range, and understanding how wide that range is turns a difficult group order into a simple one. Speedy Pros Hats is a family-run hat shop in Tampa Bay that has been decorating Flexfit and Yupoong blanks since 2009.
- Each Flexfit size spans a range, not a point. Two or three sizes usually cover a whole team.
- Measure just above the ears. That is where the band sits.
- Between sizes, go up. The band tightens over time rather than loosening.
Flexfit Hat Size Chart: Flexfit Hat Sizing: The Short Answer
Flexfit caps use an elastic band rather than an adjuster, and each size covers a span of head circumferences rather than a single measurement. Small/Medium and Large/XL together cover the large majority of adults, which is why two sizes usually suffice for a group order.

How to Measure
Run a soft tape around the head just above the ears and across the widest point at the back. That is where the Flexfit band sits, and measuring higher or lower gives a number that will not correspond to how the hat wears.
If there is no soft tape, a length of string against a ruler works. What does not work is guessing from hat sizes in other systems, because fitted sizing, Flexfit sizing, and generic small-medium-large sizing are three different conventions.
The Size Bands
| Flexfit size | Approximate range | Typically covers |
|---|---|---|
| Youth | Smallest band | Children and some smaller adults |
| Small / Medium | Lower adult range | The majority of smaller adult heads |
| Large / XL | Upper adult range | The majority of larger adult heads |
| XXL | Above the standard range | Sizes a standard L/XL will not reach |
Exact ranges vary slightly by style, so confirm against the specific blank before a large run.
In short: S/M and L/XL together cover most adult groups, and adding XXL handles the outliers.
Ordering a single size for a whole crew because "stretch fit fits everyone." It stretches within a range, not across all of them, and a cap outside its range is either loose or uncomfortable.

Stretch Fit Versus Fitted Versus Snapback
A fitted cap has no give at all and comes in narrow increments, which gives the cleanest look and demands the most preparation. A snapback covers nearly everyone in one size at the cost of a visible plastic closure.
Stretch fit sits between them. There is no closure and no adjuster, so the back is clean, and each size covers enough range that two options handle most groups. For a uniform program wanting a finished look without a sizing survey, this is usually the right answer. Snapback vs fitted hats covers the trade-offs in more detail.
Sizing Across Different Blanks
A Large/XL in one manufacturer's stretch-fit line does not necessarily correspond to a Large/XL in another's. Because Flexfit and Yupoong share a house, sizing carries between them, but stepping outside that range means checking again.
This catches programs that expand. A crew fitted successfully in one blank gets a second style from a different manufacturer, and suddenly a proportion of them do not fit. Confirming the ranges before adding a new blank avoids reordering.
When Someone Is Between Sizes
Size up. The elastic band tightens fractionally over the life of the cap as the fibers compress, so a cap that starts marginally loose settles into a good fit. One that starts marginally tight becomes uncomfortable and stops being worn.
This is the opposite of the advice for knit beanies, where the knit relaxes and stays relaxed. Different materials, opposite trajectories.

Heat is what kills the elastic in a stretch-fit band. A single dryer cycle can permanently reduce the range a cap covers, which turns a good fit into a loose one with no adjuster to compensate.
Ordering for a Group
The efficient approach is to order S/M and L/XL in roughly the proportion your group skews, plus a small number of spares in each. Collecting individual measurements from thirty people is rarely worth the effort when two size bands cover them.
Where it does become worth it is a customer-facing team where fit is visible and matters. In that case a quick survey is a small cost against hats that look right on everyone.
Order a couple of extras in each size rather than exactly to headcount. Sizing estimates are never perfect, and swapping one cap is easier than placing a second order.
Why Fit Complaints Usually Are Not About Size
Most complaints traced back turn out to be about crown depth rather than circumference. A cap can be the correct size around and still sit too high or too low, which people report as the wrong size because that is the only variable they know about.
Low-profile versions exist for exactly this reason. If someone finds a correctly sized cap uncomfortable or oddly proportioned, depth is the thing to change rather than the size band.

Which Flexfit Blanks to Consider
The 6277 is the structured workhorse and the default for most uniform programs. The 110 gives a similar front with a snapback closure, which is the option when sizing is unknown. Yupoong blanks share the same house and the same sizing conventions, so the two ranges mix cleanly inside one order.
For a direct comparison against the other dominant trucker blank, the 112 and the 110 are the two most commonly weighed against each other.
Because Flexfit and Yupoong sizing carries across the range, a program can run stretch fit for staff and snapback for giveaways with the proportions matching between them.
Youth and Mixed-Age Groups
Youth sizing exists in the Flexfit range and covers a different band rather than being a slightly smaller adult size. For teams and clubs spanning ages, ordering youth alongside S/M handles the spread properly.
The mistake is assuming a small adult size will cover an older child. It sometimes does and frequently does not, and a cap that does not fit gets left at home regardless of how good the logo is.
Checking Fit Before a Large Run
Ordering a single cap in each size band before committing a full program costs very little and settles the sizing question with evidence rather than estimation. It also lets whoever will wear them try one on, which surfaces preferences a spreadsheet will not.
This matters most on customer-facing teams, where a cap that fits badly is visible to everyone who walks in.

Decoration and Fit
Fit affects decoration less than people expect, because the band does the stretching rather than the front panel. A structured Flexfit front stays stable under a needle regardless of which size band it belongs to.
What does change slightly is placement across sizes. A logo centerd on an S/M front will read fractionally higher on an L/XL, because the crown is marginally taller. On most designs this is imperceptible; on large marks it is worth checking the proof for both sizes.
What to Tell People Before They Choose
If staff are picking their own size, give them the measurement instruction rather than the size names. People consistently underestimate their own head size and will pick the smaller band if left to guess, which produces a wave of swaps.
Getting Custom Flexfit Hats Right the First Time
Measure properly, order two size bands rather than one, size up when someone is borderline, and keep the caps out of the dryer. Those four things solve nearly every fit complaint.
Speedy Pros Hats sends a free digital proof before anything is stitched. No minimum order, and free artwork setup on orders of 12 or more.
More recent guides: toddler hat size chart, how to read a hat size, baby hat size chart.

Frequently Asked Questions
How do Flexfit sizes work?
Each size covers a range of head circumferences using an elastic band, rather than a single fixed measurement the way fitted caps do.
Where do I measure for a Flexfit hat?
Around the head just above the ears and across the widest point at the back, which is where the band sits.
What if I am between Flexfit sizes?
Size up. The band tightens slightly over the life of the cap, so a marginally loose fit settles rather than a tight one loosening.
How many sizes do I need for a team?
Small/Medium and Large/XL together cover most adult groups. Adding XXL handles anyone above the standard range.
Do Flexfit hats stretch out?
Not significantly under normal wear. Heat is what damages the band, and a dryer cycle can permanently reduce the range it covers.
Is stretch fit the same as fitted?
No. Fitted has no give and comes in narrow increments; stretch fit uses an elastic band covering a range.

Related Reading
- Flexfit 110 Review
- Richardson 112 vs Flexfit 110
- Fitted snapback hats
- The Yupoong 5-Panel Hat
- Custom Hat Buyer's Guide
Popular pick: Flexfit 6511 Trucker.
Popular blank: Flexfit 110 Mesh-Back. Related blank: Richardson 112 Plus.
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