Personalized Colorguard Rocks Toddler T-Shirt. Colorguard rocks with three rocks holding flags is a humorous guard design for marching band and indoor guard members. A toddler-soft cotton tee in look-at-me, big kid colors. 4.5 oz., 100% combed ringspun cotton. White is sewn with 100% cotton thread. Topstitched rib crew neck. Double-needle stitched sleeves and bottom hem. Shoulder-to-shoulder taping.