What is a Flat Cap?

A flat cap is a rounded, soft-crowned hat with a short, stiff brim at the front. First appearing in Northern England in the 14th century, flat caps became embedded in British and Irish life after a 1571 law encouraged their wear among men of the working classes. By the late 19th and early 20th century, they were worn by everyone from labourers and farmers to gentlemen at leisure. Today, the flat cap retains its heritage charm while being embraced as a versatile style in both town and country.

Types of Flat Cap

Classic Flat Cap

  • Rounded crown, snug fit, and a short brim: the archetypal style.
    Example: Gill Tweed Flat Cap

"Ivy" Cap

  • Slimmer, sleeker, with a flatter profile that lends a sharper silhouette.
    Example: William Cashmere Flat Cap

"Duckbill" Cap

  • A modern variation with a curved crown and peak that follows the shape of the head, offering a sportier profile.
    Example: Grosvenor Olive Flat Cap

"Driving" Cap

  • Lightweight and streamlined, traditionally worn for motoring and warm-weather dressing.
    Example: Florida Linen Flat Cap

Luxury/Limited Edition Flat Cap

  • Special editions made from premium fibres or celebrating key Lock & Co. Milestones
    Example: Auric Anniversary Edition Flat Cap

Popular Fabrics for Flat Caps

Flat caps are crafted from a variety of fabrics, each suited to different seasons and occasions:

Wool & Tweed – Classic, durable, and insulating; ideal for cooler weather.

Linen & Cotton – Lightweight, breathable, and comfortable in spring and summer.

Corduroy & Moleskin – Soft fabrics with vintage appeal, adding subtle texture.

Leather & Suede – A more modern take, bringing structure and a touch of luxury.


The choice of material often defines when and how a flat cap is worn - from a breathable linen cap in summer to a rich tweed for autumn country walks.

Explore More About Flat Caps

To help you find the right flat cap and make the most of it, explore our in-depth guides:

How to Wear and Style a Flat Cap

From casual weekend dressing to refined city looks, learn how to style a flat cap with confidence. Explore outfit ideas, occasions to wear one, and whether a flat cap leans casual or formal.

How Should a Flat Cap Fit?

Getting the fit right is essential. This guide explains how a flat cap should sit, how to choose a shape that flatters your face, and whether to size up or down.

How to Care for and Clean a Flat Cap

Every fabric requires different care. Learn how to maintain tweed, wool, linen, or cotton caps - including what to avoid and whether machine washing is ever safe.

How to Fold, Store, Pack and Transport a Flat Cap

Keep your flat cap looking its best when travelling or storing it at home with practical folding, packing, and storage tips.

How to Measure Flat Cap Size

A step-by-step guide to measuring your head and choosing the right size, with answers on adjustability and whether flat caps are true to size.

Trending Flat Cap Styles in 2025

Flat caps never go out of style - but they do evolve. Explore this year’s trends in fabrics, colours, and shapes to see how heritage design meets contemporary fashion.

SIMILAR ARTICLES

Have a scroll and discover some of our other articles, from press coverage to style guides and informational pieces.

View all

  • Celebrating 350 Years of Lock & Co.

    2026 will see Lock & Co. celebrating throughout the year, with very special events to attend, exclusive limited-edition men’s and women’s hats and caps launched each month - and even some extra-secret surprises!

  • Christmas Wishes from Lock & Co.

    Thank you, most kindly, for your custom, and we hope to see you in the shop or on our website soon. You are always most welcome.

  • The Art of Gifting: Timeless Christmas Gifts from Lock & Co. Hatters

    Celebrate the season with timeless Christmas gifts from Lock & Co. Hatters. Explore our heritage inspired collection of hats, scarves, and accessories, crafted with care and designed to last.

  • Honouring Remembrance Day: The Lock & Co. Poppy Pin

    Having joined the team only a few weeks ago, our milliner Isabel has already brought her remarkable embroidery expertise to life with a very special creation for Remembrance Day 2025.

  • How to Care for & Clean a Panama Hat

    To keep your Panama hat looking as stylish as the day you purchased it. We provide suggestions on how to take care of your Panama hat.

  • How Should a Flat Cap Fit?

    The right fit is essential for both comfort and style. A well-fitting flat cap should feel secure without being tight, sit correctly on your head, and complement your face shape.

  • How to Wear & Style a Flat Cap

    A flat cap is one of the most versatile hats you can own. Whether you are dressing for a weekend walk, a day in the city, or a smart country wedding, the flat cap adds effortless polish while remaining comfortable and practical. Here is everything you need to know about wearing one with confidence.

  • How to Care for & Clean a Flat Cap

    Flat caps are designed to last for years, but proper care is key to maintaining their shape, colour, and quality. Different materials -wool, tweed, linen, leather - require slightly different cleaning approaches.

  • How to Fold, Store & Pack a Flat Cap

    Flat caps are travel-friendly by design, but a little care goes a long way in keeping them looking sharp - whether you are storing them at home or packing them for a trip.