Personalized Motocross Dirt Biking BMX Toddler T-Shirt. Dirt bike rider with tire tracks and mud for kids who love motocross 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.