These newborn baby rompers are crafted from 100% cotton, providing soft and breathable comfort for infants aged 0 to 12 months. Featuring long sleeves, an O-neck collar, and covered button closures, they are designed for easy dressing and a true-to-size fit. Suitable for both girls and boys, this cute springtime sleepwear comes in sets of 1, 2, or 3 pieces and is made in Mainland China with safe materials.