The O.N.E. is GroVia‰Ûªs newest product which is truly a all-in-one diaper fitting 10 - 35+ kiddos. Excellent absorbency, no need for boosters and double layers. The Channeled soaker design is very trim and yet absorbent. Choose between hook and loop or snap. You will love these diapers! Good for pre-school and baby sitters easy usage.