Our Rock Youth Shirts are highest quality, licensed band t-shirts. Most of our rock youth shirts are 100% cotton and preshrunk 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. Superman Classic S Logo Youth rock youth T-shirt. Official youth short sleeve Superman T-shirt.