Personalized Ohm Mighty Dark Products Toddler Full Zip Hooded Jacket. Tickle the funny bone of your favorite science geek with this design for birthdays, holidays, back to school and graduations for your favorite scientist 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.