Personalized Geology Rock On Toddler Full Zip Hooded Jacket. Geology rock on text with a happy dancing rock is a unique science design for birthdays, holidays and graduation. 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.