The Evenflo Maestro offers two modes of forward-facing use. Accommodating children 22-110 lbs, stage one has a 5-point harness for children at least 2 years old, and stage two allows you to use the vehicle belt as a high back booster for children at least 4 years old. The up-front harness adjustment is centralized, making it easy to properly tighten the harness. As they grow, the shoulder belt guide assists in positioning the vehicle's belt across your child's shoulder to provide optimal safety.