Black COS Hats first appeared on Chictopia's streetstyle gallery in Fall 2009 seen on The Hague blogger Breshna of littlefashionnotes.blogspot.com. She styled her black COS hat with a black Diesel jacket, brown Steve Madden boots, and purple Mango pants. Since then, Black COS Hats have grown in popularity as bloggers from The Hague and Paris have discovered them. Black COS Hats are generally seen in casual and basic style.
There are currently 2 streetstyle photos of bloggers wearing Black COS Hats. Most recently, blogger Dorotheet of lejournaldedoro.com rocked her black COS hat with a blue American Apparel sweater and black Zara shorts.