The romper made of polyester, easy to care, breathable, soft and comfortable, will not irritate the baby's skin; The bottom of the tights is designed to pull up and close and strengthen the three times close, which makes it easy to put on and take off,which can easily change the child's clothes and facilitate the baby to change diapers.The considerate design also can prevent babies from getting cold when they are sleeping.We provide 6 different sizes, which are suitable for S(0-3 months), M(3-6 months), L(6-9 months),XL( 9-12 months), 2XL(12-18 months) and 3XL(18-24 months); You can choose according to the needs of your child, the size selection brings convenience and comfort to you