Personalized Pi Day Boys Cutie Pi Math Toddler Full Zip Hooded Jacket. Daddy's little cutie pi Toddler Full Zip Hooded Jacket - Black with Pi math symbol in purple for a son. Fun baby shower gift for a math teacher. 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.