So Relative! Unisex Baby Keep Calm I'm The Little Sister Bodysuit Makes a great gift! Approximate sizing: Newborn (up to 12 pounds), 6 Months (12-18 pounds), 12 Months (18-25 pounds), 18 Months (25-30 pounds) Made from premium 100% ringspun cotton. Excellent quality and super soft. Double-needle rib binding on neck, shoulders, sleeves and leg openings Reinforced three-snap closure for easy diaper changes