Personalized Biological Engineering Heart Toddler Full Zip Hooded Jacket. Biological engineering text in a heart with pimples is a humorous design for bioengineers. Fun gift ideas for birthdays, holidays, graduation and Valentine's Day. 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.