What is a "newmarket"?

A newmarket is a type of close-fitting, thigh-length men's overcoat, traditionally made of wool and often worn for horse racing events. It is named after the town of Newmarket in Suffolk, England, where horse racing has been a major part of the town's history since the 17th century. The Newmarket coat typically has a single-breasted front with buttons, a high collar, and a slit at the back for ease of movement while riding. It is also sometimes referred to as a "racing coat" or "Newmarket jacket," and has become a popular style of men's outerwear beyond its equestrian roots.