The Evenflo ShyftTM DualRideTM has been designed to fit a wide range of children. The information provided in the table below should help you determine if it is the right fit for your child. Rear-facing weight range: 3 - 35 lb. (1.4 – 15.8 kg) Rear-facing height range: 15.7 - 32 in (40 - 81 cm) Rear-facing minimum age: birthLowest harness position (with infant insert): 4.5 in (11.4 cm) Highest harness position: 11.5 in (29.2 cm)Inner buckle position: 3 in (7.6 cm)Middle buckle position: 4 in (10.2 cm)Outer buckle position: 5 in (12.7 cm)