The classic leather moto jacket was first introduced in the 1920s, when motorcycles began to gain popularity as a mode of transportation. The jacket was designed with a diagonal front zipper, wide lapels, and a belted waist to allow for ease of movement and protection against the wind and rain.

During World War II, leather moto jackets were worn by soldiers who rode motorcycles as part of their duties. The jackets were practical and durable, and helped to protect the soldiers from the elements while on the road.

In the 1950s, leather moto jackets became a symbol of rebellion and nonconformity, worn by motorcycle gangs and counterculture movements such as the greasers and rockabillys. The jacket was popularized by Marlon Brando in the film "The Wild One," and later by James Dean in "Rebel Without a Cause."

In the 1960s and 1970s, the leather moto jacket became a staple of rock and roll fashion, worn by musicians such as Jimi Hendrix, The Beatles, and The Rolling Stones. The jackets were often customized with patches and studs to reflect personal style and identity.

Today, the leather moto jacket remains a popular and iconic style, worn by both motorcyclists and fashion enthusiasts. It is available in a wide variety of materials and styles, but the classic leather jacket with a diagonal front zipper, wide lapels, and a belted waist remains the most popular and recognizable style. It is often seen as a timeless and versatile piece that can be dressed up or down and worn in a variety of settings.