• OLIVE GREEN TWEED FLAT CAP WITH INTERNAL EAR FLAPS
  • OLIVE GREEN TWEED FLAT CAP WITH INTERNAL EAR FLAPS
  • DARK GREY TWEED FLAT CAP WITH INTERNAL EAR FLAPS
  • DARK GREY TWEED FLAT CAP WITH INTERNAL EAR FLAPS
  • DARK GREY TWEED FLAT CAP WITH INTERNAL EAR FLAPS
  • OLIVE GREEN TWEED FLAT CAP WITH INTERNAL EAR FLAPS
  • OLIVE GREEN TWEED FLAT CAP WITH INTERNAL EAR FLAPS
  • OLIVE GREEN TWEED FLAT CAP WITH INTERNAL EAR FLAPS
  • DARK GREY TWEED FLAT CAP WITH INTERNAL EAR FLAPS
  • OLIVE GREEN TWEED FLAT CAP WITH INTERNAL EAR FLAPS

Oslo Flat Cap
In Wool Tweed

Oslo Tweed Flat Cap
Colour
Oslo pattern 1
Oslo dark grey
Select size

The Oslo is a luxurious upgrade from the traditional flat cap.

With a sleek silhouette, this cap is an ideal piece for the man about town and for country style living. Made from sumptuous wool tweed, the cap has inner ear flaps that are lined with soft fleece and can be worn down in colder weather.

PRODUCT DETAILS

Measurements

Measurements based on a size EU 59 cm flat cap:

  • Peak Length: 7 cm
  • Diameter: 23.5 cm
Care

Steam from a household kettle and a hard bristle hat brush will help remove dust and dirt. Brush the hat using short strokes.

Spot-clean using a damp cloth and leave to dry at room temperature.

Materials

This cap is made from sumptuous wool tweed and has internal ear flaps that are lined with soft fleece that can be worn down in colder weather. The cap is durable and has a flexible texture to ensure a perfect fit. It is finished with a satin lining and cotton sweatband and carries our treasured label.

Styling & Fitting

With a sleek silhouette, this cap is also available in a dark grey making it an ideal piece for the man about town as well as for country-style living.

Due to the inner ear flaps, we recommend you choose one size larger.

How to measure your hat size.

Hat Size Chart

Men'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 hatters here.

HAT CHARACTERISTICS

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

Style
Flat Cap
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.
Material
Wool Tweed
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.
Shape
Narrow Shape
Different styles of hats have different shapes to them, including classic, fuller, narrow, and standard fits, or with an oversized or a wide brim or sporting a particular shape - bell, birdcage, etc.
Features
Internal Ear Flaps Durable
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.

PRODUCT STORIES

  • Longevity
    Learn more

    LONGEVITY


    Lock & Co. Hatters is the oldest hat shop in the world and the oldest shop in London. Our passion for hats is boundless and our knowledge unrivalled. For 350 years, Lock & Co. has worked with the finest felts, tweeds, cloth, and cashmere, sourced exclusively from around the world.
    Drawing on our unique British heritage and craftsmanship, we create both
    traditional and contemporary hat designs, with scrupulous attention to quality and fit. Our hat shop was established in 1676, making us the oldest hat shop in the world and the oldest shop in London. Every Lock & Co. hat purchased is carefully and expertly hand-prepared in our London shop by one of our Hatters, before it leaves through our famous green front door at No. 6, St James’s Street.

    For centuries, we have supplied some of history's best-known figures with hats, including Admiral Lord Nelson and Winston Churchill. We created the world's first bowler hat (known to hat aficionados as the 'coke'), and to this day our styles remain fresh, trusted and timeless. Royal Warrants attest to Lock & Co.'s commitment to hat quality that is trusted and respected; everything that
    you would come to expect from Lock & Co. – the home of hats since 1676.

  • How To Wear a Flat Cap
    How To Wear a Flat Cap
    Learn More
  • The 350 Caps
    The 350 Caps
    Learn More
  • History of Royal Ascot Fashion: 350 Years of Lock & Co. at Ascot
    History of Royal Ascot Fashion: 350 Years of Lock & Co. at Ascot
    Learn More
  • Celebrating 350 Years of Lock & Co.
    Celebrating 350 Years of Lock & Co.
    Learn More
Close

HOW TO
MEASURE HAT SIZE

STEP ONE

Place a tape measure around your head positioned mid-forehead and just above the ears.

STEP TWO

What size is my head? Take note of the measurements in centimetres or inches.

STEP THREE

What's my hat size? Use the hat sizing chart below to find what hat size you are.

Hat Sizing Chart