F21 Sweatshirts first appeared on Chictopia's streetstyle gallery in Winter 2011 seen on Washington blogger AIRILIM of airilim.blogspot.com. She styled her f21 salmon pink sweatshirt with a f21 black white skirt, UO black belt, and Indigo by clarks black boots. Since then, F21 Sweatshirts have grown in popularity as bloggers from Makati City, Manila, and Washington have discovered them. F21 Sweatshirts are generally seen in casual, chic, and preppy style. Popular types of F21 Sweatshirts are super comfy, grey knitted, salmon pink, and gray knitted. Blogger's favorite color is silver.