Measured: Finishes name the surface and materials name the base, so the material line of a listing, not its adjectives, identifies what an upper is made of.
The basics
What to know about hats
Crown, brim and one number
Every hat resolves into two parts and one number. The crown is the dome that covers your skull, the brim is the shelf running out from its base. The number is your head circumference, which decides whether any of it fits. Style names are just combinations of the first two. Raise the crown and dent it and you have one family, flatten it and you have another, push the brim past four inches and the hat stops decorating and starts shading.
Four ways a hat is made
Four construction methods cover almost everything on a shelf, and each sets how much the hat forgives. Blocking steams felt or straw over a carved wooden form until the fibers set as they cool, buying crisp lines and zero stretch. Sewing joins flat panels of cloth into a crown. This is how caps and soft brimmed hats are built and why they crush and recover. Knitting makes the hat as a stretchy tube, so one size covers three inches of head. Felting mats loose wool with heat, water and agitation into a dense sheet that can be cut without fraying. Felt splits into two grades priced very differently. Fur felt, matted from rabbit or hare hair, has fine barbed fibers that lock together. It springs back from a crush and takes steam well. Meanwhile, wool felt uses coarser fibers, keeps every dent and cracks along the fold in time.
Measure your head before you buy
Sizing is where most hat money is wasted. Run a tape around your head a finger's width above the ears and across the fullest part of the back of the skull, level and snug rather than tight. The inches you read are your number. American hat sizes are that circumference divided by pi. So 22 inches is a size 7, 22 3/8 inches is 7 1/8 and 22 3/4 inches is 7 1/4. European sizing prints the centimeters instead: 56, 57, 58. Letter sizing runs loosest of the three, with small around 55cm, medium 56 to 57cm and large 58 to 59cm, and makers disagree by a full centimeter. Blocked felt and straw need the exact number because they cannot be pulled wider once set. Knit gives you an inch either way, and an adjustable cap covers about three inches at the back.
Let the weather pick
Let weather and your actual day pick the style. Dry cold belongs to the beanie, which weighs a couple of ounces and packs into a coat pocket, or to the beret if you want your ears free and no added height. Strong sun means brim width, and only the sun hat at four inches or more shades your ears and the back of your neck, two of the places sun damage collects fastest. Rain suits a treated bucket hat, which sheds water and dries without marking where felt spots. Dressing up is where the fedora and the cloche sit, one adding height above the head and the other framing the face from just above the brows. A tall crown reads heavy on a small frame, and a very wide brim swamps narrow shoulders.
Shade, shape or packing
Coverage, structure and packability pull against each other, and you cannot have all three. Brim width buys shade and buys wind, since past four inches the brim behaves like a sail and wants a chin cord. Structure buys a clean line and costs tolerance. A blocked hat half an inch out is unwearable, where a knit hat half an inch out is fine. Packability costs stiffness, since a crushable straw or a folding felt gets its give from a looser weave or a softer body. Warmth costs ventilation. A lined winter hat traps the heat your head sheds. That is roughly seven to ten percent of your resting heat loss rather than the half the old advice claimed.
Start at the sweatband
Handling answers most quality questions in a minute. Start inside at the sweatband, the strip that meets your forehead. Leather absorbs sweat and molds to your head over a season, cotton absorbs and wears out, and slick synthetic tape pushes it straight back onto your skin. Feel whether that band is stitched in or glued, since a glued band lifts at one end and then chafes. Along the brim edge, a bound or turned finish holds where a raw cut frays and, on straw, unravels from the first snag. Ignore the X ratings on felt hats, the 5X and 100X marks, because no standard defines them and every maker sets its own scale. A stated UPF 50 rating on a fabric sun hat means the cloth was tested and passes a fiftieth of the ultraviolet reaching it, which neither stiffness nor dark color predicts.
Storage ruins more hats than wear
Storage ruins more hats than wear does. A brimmed hat stood on its brim carries the whole weight of the crown on that thin edge and goes out of true within weeks, so rest it upside down or on a stand. Sweatbands need attention nobody gives them: a wipe with a barely damp cloth after a hot day stops hair product and salt hardening into a ridge that presses a line into your forehead. Wool and fur felt feed clothes moth larvae, which eat animal fiber, so seal them away over summer or store them with cedar. Damp is survivable: reshape the hat while it is still wet and dry it at room temperature to keep the size, since a radiator shrinks felt by half a size for good.
Buyer checklist
Before you buy hats
Small accessories are easy to buy by appearance, but measurements, materials and hardware decide comfort and durability.
01
Check the actual measurements
Belt length, hat circumference, glove size and lens width are more reliable than one-size labels.
02
Confirm material and lining
Fiber content affects warmth, breathability, stretch, skin feel and cleaning.
03
Inspect moving parts
Buckles, hinges, clasps, elastic and stitched joins usually show wear before the main material does.
04
Plan for storage
Structured hats, leather goods and sunglasses last longer when their shape and surfaces are protected.
Measure with a tape around your head a finger's width above the ears and over the fullest part of the back of the skull, keeping it level the whole way round. Pull it snug, not tight, and take the reading twice.
Convert before you order. American sizes are the circumference in inches divided by pi. So 22 inches is a 7, 22 3/4 inches is a 7 1/4 and 23 1/4 inches is a 7 3/8. European numbers are simply the centimeters, 56, 57, 58.
A hat fits when the band sits about a finger's width above your eyebrows, the hat does not shift as you shake your head. Ten minutes of wear leaves no red line on your forehead.
Buy the larger size when you fall between two in blocked felt or straw, then take up the slack with hat sizing tape, a foam strip that tucks behind the sweatband and tightens the fit by roughly half a size per layer.
Count your hair as head size. A bun, braids or a thick curl pattern adds half an inch to an inch, so measure with your hair styled the way you normally wear it.
Remember which caps adjust. A snapback or slide adjuster covers about three inches of range at the back. A fitted cap has none and follows the same inch sizes as a felt hat.
Care
Caring for hats
Rest a brimmed hat upside down or on a stand. Standing it on the brim loads the crown's whole weight onto a thin edge and pulls the brim out of true.
Wipe the sweatband with a barely damp cloth after a hot day, because sweat and hair product harden into a ridge that later presses a mark into your forehead.
Handle a felt hat by the front and back of the brim rather than pinching the crown, since squeezing the same two points sets permanent dents and eventually splits the felt.
Store wool and fur felt sealed or with cedar through the summer, as clothes moth larvae eat animal fiber and a felt crown is a full meal for them.
Reshape a soaked hat while it is still damp and dry it at room temperature. A radiator can shrink felt by half a size, and that size never returns.
Keep sunscreen and hair oil off pale straw and off a leather sweatband, because both stain and leave a dark line that will not lift out.
Questions
Common questions
How do I measure my head for a hat?
Wrap a soft tape around your head about a finger's width above your ears, crossing the fullest part of the back of your skull, and keep it level all the way round. Snug, not tight. Read the number in inches or centimeters and measure again to confirm. Do it with your hair as you normally wear it.
What does a hat size of 7 1/4 mean?
It is the head circumference divided by pi, a convention inherited from hatters measuring diameter. A 7 1/4 fits a head of 22 3/4 inches, a 7 fits 22 inches. Each eighth of a size is about three eighths of an inch of circumference. European makers skip the math and print 58, meaning 58 centimeters.
Can a hat be stretched if it is slightly too small?
A little. A hat stretcher, a screw operated frame set inside the crown overnight, gains about half a size on wool or fur felt. Straw resists it and can crack. Knit stretches on its own and needs nothing. Going the other way is easier, since sizing tape tightens a loose hat by half a size per layer.
What brim width actually protects against the sun?
Four inches or more, measured from the crown out, before a brim shades your nose, ears and the back of your neck together. Two inches covers the eyes and little else, and a cap peak leaves ears and neck fully exposed. Brim width also does nothing for reflected light off water or sand, so sunscreen still applies.
Is fur felt better than wool felt?
For durability, clearly. Fur felt uses fine barbed fibers from rabbit or hare that interlock tightly. So the body resists water spotting, springs back after being crushed and can be steamed back into shape for years. Wool felt is coarser, keeps every dent you put in it and eventually cracks along a fold. Expect to pay three to five times more.
Why does my hat leave a red mark on my forehead?
The hat is half a size too small, or the sweatband has hardened. Try it on and wait ten minutes: a correct fit leaves no line. If the band feels ridged or stiff, clean it with a barely damp cloth and let it dry. If the fit is really tight, a stretcher buys about half a size on felt.
What stops a wide brim hat blowing off?
Add a chin cord, which is the only reliable answer past four inches of brim, since the brim works like a sail. A deeper crown helps because it grips more of your head. Sizing tape removes the slack that lets a hat lift. In steady wind, wear the brim down at the back and turned up at the front.
Is a Panama hat just a straw fedora?
Not quite. Panama refers to the material and the origin, toquilla palm fiber hand woven in Ecuador, and it comes in several crown shapes including fedora, optimo and planter. Weave tightness sets the price, from coarse everyday grades to Montecristi hats with hundreds of weaves per square inch. All of them crack if folded when dry.
