100% Polyester. Great Gift for Football Fans: This is the best gift for football-loving parents and their newborn babies. This unisex baby kick suit is a unique clothing gift for newborns, babies, infants and toddlers. Gifts for team football lovers. Pure, natural, safe and healthy, soft and breathable. To make it more comfortable for the newborn to wear, our clothes have a new tag-free design, there is no excess fabric sticking out and it will not scratch the baby's skin, making it more comfortable to wear. Easy to put on: Our baby onesies are a one-piece model with 3 snaps, which is also very practical for babies who use diapers. It can be changed quickly with easy opening and closing, reducing the baby's frequent changes of clothes and the risk of catching a cold. Size suggestion: baby onesie and romper design: size available from 6-12 months up to 12-18 months, soccer jerseys: size available from 9T-12T, wide size selection for boys and girls, please see our size guide in the picture on the left. If your baby is stronger, or you want a looser fit for your baby size, please order one size larger. Due to the handmade by workers, size 0.5-3 cm different from the size chart is allowed.