The Britax Unity infant carrier is suitable for babies from birth up approximately 12 months of age. It has a separate base which is installed in to the car using either ISOFIX compatible connectors or by using the car’s seat belt. These options are sold as separate products. The infant carrier is suitable for at least 80% of children when normally discharged for hospital. For the other 15% of children who are of low birth weight, under 3kg, the Unity can have the harness reconfigured so that these children can leave hospital and travel safely which is both an Australian and a world first. The carrier component can be used as a travel system with compatible strollers. Also suitable for use on aircraft.