Spring/Summer Cotton Baby Girls 's Outdoor Bowknot Sun Hat/Beach Hat 100% Brand New and High Quality of Baby's Hat Materal: Cotton Hat circumference about 16.9 in(43cm),for babies 3-6 months;About 18.1 in(46cm),for babies 6-12 months;About 18.9 in(48cm),for babies 12-24 months;About 19.7 in(50cm),for babies 2-3 years old; About 20.5 in(52cm),for babies 3-4 years old;About 20.9 in(53cm),for babies 5-7 years old. Please note: the age is only for reference,you can choose it according to your baby's head circumference. Tips: white hats can not wash with other clothing, soaking time is not more than 10 minutes.