A jacket using lightweight knit material of WINDSTOPPER product for lining. A high-performance material that blocks wind while keeping moisture permeability. The outer fabric is made of nylon twill with an initial water-repellent finish, to make a lightweight jacket with a slight gloss. The design roots are the US Air Force L-2B. Nanamica retains the characteristic details such as pocket flaps and epaulettes, the drawcord at the hem and the inside pocket are details used for outdoor jackets.