InfaSecure Achieve Premium (Birth to 8 Years)Achieve Premium: Best Practice Safety from Birth to Eight Years Old Achieve Premium is the next evolution of our groundbreaking Birth to Eight Years Type A4 G Convertible Car Seat. It allows for Extended Rearward Facing up to a large 30 month old, and Forward Facing with an internal harness to a large 8 year old. Offering the absolute best practice safety to a child through all stages of their development, it's the only restraint you'll ever need.