A cagoule, cagoul, kagoule or kagool (from the French cagoule meaning hood) is the British English term for a lightweight (usually without lining), weatherproof raincoat or anorak with a hood, which often comes in knee-length.

A cagoule which can be rolled up into a very compact package and carried in a bag or pocket was invented by Noel Bibby of Peter Storm Ltd. in the early 1960s. It has an integral hood, elasticated or drawstring cuffs, and a few poppers or a short zip at the neck. It does not open fully at the front and must be pulled on over the head. In some versions, when rolled up, the hood or front pocket doubles as a bag into which the rest of the coat is pushed. It became very popular in the United Kingdom during the 1970s, going by such trademarks as Pack-a-Mac.^{[citation needed]}

A raincoat is a waterproof or water-resistant coat worn to protect the body from rain. The term rain jacket is sometimes used to refer to raincoats that are waist length. A rain jacket may be combined with a pair of rain pants to make a rain suit.

Modern raincoats are often constructed of breathable, waterproof fabrics such as Gore-Tex and coated nylons. These fabrics allow some air to pass through, allowing the garment to 'breathe' so that sweat vapour can escape. The amount of pouring rain a raincoat can handle is sometimes meassured in the unit millimeters, water gauge.

Important styles of raincoat include: