Personalized Dinosaur 1st Birthday T-Rex Newborn Layette. Grinning green dinosaur is celebrating his first birthday! Cute birthday present for the one year old! 100% combed ringspun cotton 5.8 ounce 1×1 baby rib sleeper. 3/8" flatlock binding at envelope neck and cuffs. Back sleeve flap to protect hands. Elastic opening at bottom. Infant: 0-3 Months