Our Rock Youth Shirts are highest quality, licensed band t-shirts. Our Chaser LA rock youth shirts a blend of polyester, cotton and rayon for a quality fit. They’ll hold up to the rough and tumbles of school, camp, or any mosh pit! At Rock America, kids can find the same designs in a “rock youth shirt” style that have up until now only been available in adult sizes. Chaser LA Spaceship Youth rock youth T-shirt. Official youth short sleeve Boston T-shirt.