- Design: SMFK fitness cardigan, combining dance training apparel with a fitness jacket design, featuring a large round neck. The sleeves adopt a motorcycle leather jacket silhouette, while the waist incorporates curved lines inspired by motorcycle and racing apparel, creating a structural line that distinguishes the front chest from the sides of the waist and abdomen, showcasing SMFK's simple design philosophy that structure is beauty. A cross-shaped logo is printed on the sleeve.