T-Shirt Universe Unisex Baby Little Brother (T-Rex Dinosaur) Bodysuit Makes a great gift! Approximate sizing: Newborn (up to 9 pounds), 6 Months (9-15 pounds) Made from premium 100% ringspun cotton. Excellent quality and super soft. Matching Big Brother shirt also available. Double-needle rib binding on neck, shoulders, sleeves and leg openings Reinforced three-snap closure for easy diaper changes