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Measuring for your head size is both an art and a science. You can use a tape measure (or a length of string that you will have to hold up to a tape measure) to determine the length. Place the string or tape around your head about 1/8" above your ear, across the mid-forehead, completely circling your head. Hold the tape firmly, but not too tightly. Basically you need to measure your head exactly where the hat will sit. If your measurement falls between sizes, choose the next largest size.


Another valid method to determine hat size is to try on a hat and check the size. If you don't own a hat, then try on a random hat next time you are visiting a shop that stocks hats. Sizes, even though they do vary depending on the hat maker, are technically universal. You may refer to the sizing chart below if you need to convert a medium to an actual hat size.

Please understand that hats are not unlike other apparel, in that sizes can vary somewhat from one manufacturer to another. We cannot guarantee that by following these instructions any assurance of a perfect fit.

Hat Sizers

Hat Sizing Strips Can Help to Fill In-Between Sizes

Find yourself in-between hat sizes? Want your hat to fit your head? Prefer the added comfort of a terry cloth sweatband?

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Alternatively if your hat needs an expert eye, visit our store and let our master hatters do the job for you.

Our hat care services for felt and straw hats include:

Steam & Brush

We use a specialist steamer and brush to refresh hats. This typically takes five minutes, depending on how busy our shop is.

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Brim Re-block

For brims that have lost their shape, we place the hats on a specialist wooden ring and iron the brim to restore its shape. We then follow up with a steam and brush.

Leather Sweatband Replacement

Worn sweatbands can be replaced with a new leather one. Please call the shop for advice on how long this takes.

Lining Replacement

Worn linings can be replaced with our signature white lining, complete with either black or gold Lock logo.

Re-block & Refresh

For misshapen hats, we use a wooden block to restore its natural shape, and follow up with a steam and brush.

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Band & Bow Fitting

We stock a small range of mono and multi-tone bands and bows that we can fit onto your hat for a small charge.

Conforming a Hard Hat

If you already own a hard hat and would like to have it fitted correctly, we can do so it using the conformateur. Please call the shop for advice on how long this takes.


Using a heated monogramming machine, we can personalize leather sweatbands with up to four initials. Please note that monogramming a hat makes it non-refundable and non-exchangeable.

Band & Bow Fitting

If you would like an alternative band on your hat, you can provide your own for one of our milliners to fit. Please allow up to two weeks.

Want to talk to us about your hat or need advice on hard hat (top hat & bowler) refurbishment? Give us a call or stop in.

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