The Joie Trillo car seat is designed for children from 4 to 8 years old, or 15kg to 30kg (approx). using its built-in 7 point height adjustment. Install using the vehicle seat belt. An extra achor point helps keep the seat in place for maximum safety. The Trillo features 'head-to-hip' side-impact protection, luxury ventilated memory foam materials, arm rests and hide-away cup holders.