The Ascot cap, also known as the Cuffley cap, is a hard men's cap

Cap

A cap is a form of headgear. Caps have crowns that fit very close to the head and have no brim or only a visor. They are typically designed for warmth and, when including a visor, blocking sunlight from the eyes...

 similar to the flat cap

Flat cap

A flat cap is a rounded men or women's cap with a small stiff brim in front. Cloths used to make the cap include original wool, tweed , and cotton. Less common materials may include leather. Cord flat caps are also worn in various colours. The inside of the cap is usually lined with silk for...

, but distinguished by its hardness and rounded shape. Ascot caps are typically made from felt

Felt

Felt is a non-woven cloth that is produced by matting, condensing and pressing woollen fibres. While some types of felt are very soft, some are tough enough to form construction materials. Felt can be of any colour, and made into any shape or size....

 or wool and worn in the fall or winter

Winter

Winter is the coldest season of the year in temperate climates, between autumn and spring. At the winter solstice, the days are shortest and the nights are longest, with days lengthening as the season progresses after the solstice.-Meteorology:...

, but straw

Straw

Straw is an agricultural by-product, the dry stalks of cereal plants, after the grain and chaff have been removed. Straw makes up about half of the yield of cereal crops such as barley, oats, rice, rye and wheat. It has many uses, including fuel, livestock bedding and fodder, thatching and...

Ascots also exist for warmer weather.

An Ascot being of a single color mostly matches up with casual clothes of that color or those who match it with a suit match up the color with the suit setup. Unlike the flat cap, the inside is not lined with silk but the closed in design and softness of felt still provides comfort and warmth. The style dates back to 1900 and is popular as an Original.

It is usually worn by men, but some women wear the style.
The Ascot style usually is felt. However, leather, cord, tweed and even Irish Patchwork styles are also available.