Fit Is the Whole Game
Measure Properly
- Use a soft tailor’s tape (not a metal workshop tape). A flexible sewing tape is the right tool; a workshop tape lies.
- Wrap it around your head where the hat will sit — usually 1–1.5 cm above the ear tops and across the mid-forehead.
- Keep the tape level; snug but not compressing skin.
- Note the measurement in centimetres and inches.
- Measure twice on different days if you are between sizes — haircuts and humidity move the needle slightly.
Size Chart (Approximate)
| cm | inches | UK | US | Common label |
|---|---|---|---|---|
| 55 | 21⅝ | 6¾ | 6⅞ | S |
| 56 | 22 | 6⅞ | 7 | S/M |
| 57 | 22½ | 7 | 7⅛ | M |
| 58 | 22¾ | 7⅛ | 7¼ | M/L |
| 59 | 23¼ | 7¼ | 7⅜ | L |
| 60 | 23⅝ | 7⅜ | 7½ | L/XL |
| 61 | 24 | 7½ | 7⅝ | XL |
Brands vary. A "58" in one maker’s fur felt is not identical to a "58" in another maker’s wool blend. When possible, try on; when mail-ordering, read return policies before you steam anything.
Head Shape Matters
Most stock hats assume a slightly oval head. Very round or very long ovals feel wrong even at the "correct" size.
- Round oval: Pinch points at the sides; a slightly larger size with foam pads at front/back can help, or seek open-crown hats you can reshape.
- Long oval: Pinch at forehead and rear; some heritage brands offer long-oval blocks.
- Asymmetry: Normal. Minor pad work beats forcing a painful "perfect" size.
Face-shape style advice (what looks good) lives on Hats for Face Shapes. This page is about physical fit.
Crown Height and Brim Feel
Two hats with the same circumference can feel unrelated:
- Tall crowns add formality and can slip if the sweatband is slick.
- Low crowns feel modern and secure but may sit on the ears if sized large.
- Stiff brims telegraph movement to your head; soft brims forgive motion.
- Heavy western weights need a true size — they will not "float" into comfort.
Common Fit Problems and Fixes
Tight out of the box (felt)
A professional stretcher or careful steam + stretch block can add a little room. Home kettle steam works for minor tweaks if you are patient; overdo it and you kill the finish. See Customisation and Care.
Loose / lifts in wind
Foam tape or cork pads inside the sweatband. A hat snug enough to leave a light mark after an hour is closer to correct than one you forget is there in a gale.
Hot spots on the forehead
Often shape, not size. Try a different brand block before sizing up into sloppiness.
Baseball caps and adjustables
Snapbacks and fabric straps solve circumference; they do not solve shallow crowns that sit on the ears. Try before you buy stacks of logos.
Materials and Break-In
- Fur felt: Moulds subtly to you over months; buy true size.
- Wool felt: Less malleable; fit should be right day one.
- Straw: Can stretch a little when warm/humid; do not buy painfully tight expecting miracles.
- Leather: Softens and conforms; expect slight settling.
- Knit beanies: Size by stretch and length; circumference charts are less useful.
Trying On in a Shop
- Bring the hairstyle you will actually wear.
- Check mirror front and profile.
- Nod, shake, look down at a phone — does it stay?
- Wear it five minutes; pressure points appear late.
- Compare two sizes of the same model, not only different styles.
Mail Order Checklist
- Measure this week, not from memory of a 2014 trilby.
- Read whether the crown is open or pre-creased.
- Check if the maker lists oval type.
- Prefer vendors with free returns on unbruised hats.
- Do not punch vents or razor the sweatband before you decide to keep it.
When to See a Hatter
If you love a vintage find that almost fits, a good hatter can often restyle the crown, replace a sweatband, or stretch within reason. If a cheap fashion hat is wrong in three dimensions, spend the alteration money on a better hat instead.
Fit first, fashion second. Once the hat disappears on your head in the best way — present in the mirror, absent in your nerves — then chase brim width and colour using the Styling Guide and Types catalogues.