100% Cotton. A must have for any little DC Comics fan, this officially licensed Flash TV S.T.A.R Laboratories boys t-shirt is the perfect addition to any fans collection. The large print across the front of the t-shirt showcases the logo for S.T.A.R Labs also known as Scientific and Technological Advanced Research Laboratories, printed in striking white this crisp logo sits boldly across the front of the t-shirt. This boys t-shirt offers the classic crew neck and short sleeves combination. This Flash TV S.T.A.R Labs boys t-shirt offers a standard fit. Please follow care label instructions carefully. Official The Flash TV Series Merchandise.