Lock & Co. are proud to launch a new limited edition James Bond hat. View

Sierra Beret

The Sierra beret is the perfect Spring or Summer couture statement beret or percher hat for women.

Sierra Beret
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This is a free-size head fitting.  Base: 18 cm width x 20 cm length
Bow: 16 cm width x 32 cm length


Couture hats are best stored in a hat box, away from direct sunlight.


Parasisal straw beret with hand-shaped bow and mini vintage flower detailing. Secured with elastic at the nape and a comb anchor this piece in place.

Styling & Fitting

 The Sierra is an ideal accessory for the races, Royal Ascot, or for a wedding guest look. Should you wish to order this piece in another colour please get in touch with our Stylist at stylist@lockhatters.co.uk or +44 (0) 207 930 8874.

Please note that all couture pieces come with a complementary Lock & Co. hat box.

How to measure your hat size. Read More

Hat Size Chart

Women's Hat Styling

Every Lock & Co. hat purchased is carefully and expertly hand-prepared in our London shop by one of our Hatters, before being whisked out of our famous green front door.

To find your perfect hat size, we suggest booking a virtual appointment for a consultation with one of our stylists here


At Lock & Co., we sell the finest hats and caps. To achieve this, we pay particular attention to specific hat characteristics - style, fit, durability, and materials. We share these characteristics with you for each hat to help you decide on the perfect choice.

Find Your Size and Style

Beret or Percher
At Lock & Co. we offer a wide selection of styles of hats. What defines a hat style is its form: overall shape, height/shape of the crown, width of the brim, and material type. These define a style e.g., Fedora, Trilby, Panama, Cloche, Tweed cap etc.
Parasisal Straw
Lock & Co. hats are made of the finest quality material. These can range from exclusive Escorial wool, Scottish Tweed, and cashmere to Toquilla straw for our Panama hat.
Comb & Elastic Fastening
Every part of a hat has its purpose. Discover the features or aesthetic of each hat and how it will specifically enhance your hat-wearing experience.