Fly (clothing)

Closed fly on a pair of jeans

A fly (UK: flies) (short for flyers) is a strip of material covering an opening on the crotch area of trousers, closed by a zipper (often), or buttons. On men's garments, the fly always opens on the wearer's right side; on women's garments, it may open either on the left or on the right.[1]

A fly can also be on other garments, like the paletot coat of the 20th century, where it is the front opening that can be secured close and is covered hidden by fabric.

  1. ^ Lee, Jaeil; Steen, Camille (2014). Technical Sourcebook for Designers. A&C Black. p. 93. ISBN 978-1-60901-856-6.