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2026 is a very special year for Lock & Co. as we celebrate our 350th anniversary. Our celebrations will be throughout the year, and to honour this significant milestone we will be introducing new limited-edition, men’s and women’s hats and caps each month.
January sees our first release in our most popular cap style; The Gill Flat Cap, in a vintage green and blue Donegal tweed. Finished with a celebratory 350th anniversary label and silk lining, each piece is a tribute to our heritage and crafted to be loved for years to come.
The 350 Gill Flat Cap is presented in our exclusive 350th anniversary box.
How to measure your hat size.
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 hatters 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.
Place a tape measure around your head positioned mid-forehead and just above the ears.
What size is my head? Take note of the measurements in centimetres or inches.
What's my hat size? Use the hat sizing chart below to find what hat size you are.
