Jeonbok is a sleeveless jacket worn over the Dongdari, later evolved to a daily wear in the late Joseon period. This double layered Jeonbok has no collar and sleeves. It is made of black Gap-sa (silk, simple gauze) and blue lining. The back center seam has a silt from the level of underarm, and the side seams has slits as well. Slit ends are decorated with knotted buttons and loops.