Personalized Kindergarten Rocks Toddler Full Zip Hooded Jacket. Kindergarten rocks text with three happy rocks holding kindergarten flags is a funny design for back to school, birthdays and holidays. 7.5 oz., 60/40 cotton/polyester. Jersey-lined double-needle hemmed hood. Pouch pockets for all their treasures. Coverstitched shoulders and armholes. Coverstitched rib waistband and cuffs.