【Gilet Han-juban Denim Fabric with Half-Collar】 Stylish and easy juban (undershirt)! Since the sides are not closed, you can adjust the collar opening to suit the occasion. The body is made of bleached cotton 100%. The collar has firm stitching and can be washed at home. Using a laundry net will allow you to use it for a long time. With an adjustable collar puller in two stages. You can also insert your own collar core. The denim half-collar is made by tailoring denim fabric in a half-collar style.