Seersucker or railroad stripe is a thin, puckered, usually cotton fabric, commonly but not necessarily striped or chequered, used to make clothing for hot weather. The word originates from the Persian words شیر shîr and شکر shakar, literally meaning "milk and sugar", from the gritty texture ("sugar") on the otherwise smooth ("milk") cloth. Seersucker is woven in such a way that some threads bunch together, giving the fabric a wrinkled or puckered appearance. This effect is often achieved during weaving by warp threads for the puckered bands being fed at a greater rate than the warp threads of the smooth stripes. The unevenness causes the fabric to be mostly held away from the skin rather than being plastered on it when wet with sweat, facilitating heat dissipation and air circulation. It also means that ironing is not necessary.

A suit, lounge suit, or business suit is a set of clothes comprising a suit jacket and trousers of identical textiles generally worn with a collared dress shirt, necktie, and dress shoes. A skirt suit is similar, but with a matching skirt instead of trousers. It is currently considered semi-formal wear or business wear in contemporary Western dress codes, however when the suit was originally developed it was considered an informal or more casual option compared to the prevailing clothing standards of aristocrats and businessmen. The lounge suit originated in 19th-century Britain as sportswear and British country clothing, which is why it was seen as more casual than citywear at that time, with the roots of the suit coming from early modern Western Europe formal court or military clothes. After replacing the black frock coat in the early 20th century as regular daywear, a sober one-coloured suit became known as a lounge suit.