Nike Blazer Low Sacai "Iron Grey": From coveted Nike collaborations to futuristic, sport-infused fashion, sacai is streetwear all grown up. No one reimagines bomber jackets and tactical apparel quite like the brand, making it a mainstay among the fashion elite. Sacai (stylized in lowercase) is a Japanese luxury fashion brand founded by Chitose Abe (née Chitose Sakai) in 1999. Vogue magazine has cited Sacai as influential in breaking down the dichotomy between casual and formal clothing.