Personalized Science Rocks Toddler Full Zip Hooded Jacket. Science Rocks text with three rocks holding a chemistry beaker, magnify glass and a telescope is a humorous science design for back to school, 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.