Base TThe Base T clicks easily into your vehicle, with no vehicle seat belt required. Installation is safe and simplified thanks to optimized ISOFIX release buttons. A rotation mechanism lets you get your child in or out of the car seat with ease. Only compatible with the Cloud T i Size & Z2 i Size and the Sirona T i Size & Z2 i Size car seats. Specifications: Age range (when combined with the Cloud T i Size or Cloud Z2 i Size): From birth up to approx. 24