Trousers, also known as tailored trousers, have evolved over centuries, starting from the breeches and hose worn by men in Europe during the Middle Ages. The transition from breeches to trousers began in the late 18th century, influenced by military uniforms and changing social attitudes towards comfort and practicality. The 20th century brought significant innovations such as the introduction of zippers in the 1930s and the influence of military attire during the World Wars. By the late 20th and early 21st centuries, sartorial trousers had evolved to offer a wide range of styles, from traditional bespoke tailoring to modern, slim-fit designs, embodying a blend of historical tradition and contemporary style.