Made of 100% Cotton. Fabrics that have passed tests considering the health of the little ones have been put into production. Its cotton structure absorbs sweat quickly and does not irritate the skin of the little ones. Produced with molds in European standards. 0-3 Months: 56-62 cm 3-6 months: 62-68 cm 6-9: 68-74 cm 9-12 Months:74-80 cm 12-18 Months: 80-86 cm