- Design: SMFK Retro Collection, utilizing retro-style materials and finishing processes such as garment dyeing/stirring/salting/stone washing to present the vintage texture of the clothing. SMFK wide-fit sports jacket, with an added arm pocket on the left arm like a bomber jacket, double-ended zipper design, cotton drawstring zipper design from SMFK workwear jacket, using retro fine twill workwear cotton and water-washed finish, embroidered cross flower logo on the left chest.