: This study researched the sizing system of dress form for apparel manufacturing in the domestic market. It aims to be used as basic data for the development of a dress form that could be used by manufacturers of senior men's clothing. Research focused on the sizes presented on the homepages of 17 dress form manufacturers in the USA, France, Japan, and Korea. Body measurement was made for senior men in their 50's over men (n=134). Six items were measured by the 'Standard body measurement of Size Korea'. The type of dress form in the domestic market can be classified into half-body type (upper body type and lower body type), torso, and whole-body type; in addition, each type is divided into upper arm, arm, crotch, and thigh. Korean dress form manufacturers produced/sold diverse kinds (size 7-9) for women; however, they used large/small sizes or product sizes for men without defining sizes. The chest size (93-105cm) has not been standardized while the rates of waist circumference, hip circumference and shoulder length (in accordance with the chest size) were all different. Global dress form brands manufactured reflecting body dimensions by the state organization USA ASTM. Japan JIS. For this reason, most domestic clothing businesses depend on imported dress forms. Especially, there were no dress forms for senior men. With the growing market for seniors, it would be necessary to produce senior dress forms for clothing production that reflect the body shapes and sizes of seniors. 시니어층 캐주얼 재킷과 아웃도어에 관한 선행연구는 50세