A cloth chest block on the chest of a sailor suit. In order to be more beautiful, the cloth in front of the sailor suit is called a chest block. A sailor suit generally consists of a sailor suit jacket, a skirt, a triangular scarf bow tie and a collar rope. Jackets are divided into sailor collar shirts and square sailor suits. According to the appearance of the collar, skirts can be divided into four categories: Sapporo skirt, Kanto skirt, Kansai skirt and Nagoya skirt. Sapporo lapels are the shortest, curved and have no breast stop, Kanto lapels are longer than Sapporo lapels, with straight and curved breast stops, Kansai lapels are longer than Kanto lapels, with straight and non-radian, and Nagoya lapels are very long, straight and non-radian, with non-detachable breast stops. Sailor's uniform is a kind of school uniform, which originated from the clothing of the early British navy. It is also called sailor suit and deck suit. The sailor suit is characterized by a short white or dark blue neckline in a V shape, often with a blue or black tie, and a black or dark blue A-shaped skirt with a white belt. Sailor clothes are mostly used in girls' school uniforms, which are fresh and playful.