- 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. Retro bohemian zip-up vest, made of cotton-cotton blend ribbed knit fabric, is softly washed to create a rugged and wild feel. V-neck short vest with a center front zip-up design and a waist panel for enhanced waist shaping.