Seat Belt (decorative purpose)

Before the 1920s, belts served mostly a decorative purpose, and were associated with the military. Moreover, prior to that trousers did not even have belt loops. As sportswear, trousers with belt loops were already present in the 19th century. Today it is common for men to wear belts with their trousers. In the US military belts are worn snugly at dress events or at inspection so as convey impressions of fitness and discipline.