The Adiri(R) NxGen(R) Nurser The Adiri(R) NxGen(R) Nurser offers caregivers a range of interchangeable nurser nipp les in varying flow rates designed for all the increasing flow rate needs of their developing infants. Today ReliaBrand(R) introduced a new transitional Sippy cap and a new transitional Sport cap both of which fit the existing Adiri(R) NxGen(R) bottle. This offers caregivers the opportunity to meet the transitional needs of their developing infants and toddlers without having to introduce new bottles they may reject in favor of their familiar bottle while saving on new bottle purchases.