Features: -Keeps baby warm all night -Opens fully from bottom to easily changer diaper -Safe and exclusive design without snaps -Well adjusted neck hole -Protected chin High quality YKK zipper -Lots of room for baby's feet -Soft inside texture 0-6 months: for babies from 4.5 to 7 kg / 10 to 16 lb and from 23" to 26" 6-18 months: for babies from 7 to 11.8 kg / 16 to 26 lb and from 26" to 34" 18-36 months: for babies from 11.8 to 18 kg / 26 to 40 lb and from 34" to 40 1 TOGS: Ambient temperature between 18-22 Celsius / 64-72F Fabric: 70% viscose from bamboo / 30% cotton