What are the weight and height limits for the built-in child restraint?

Use the built-in child restraint only with children who weigh between 22 and 40 lbs (10 and 18 kg) and whose height is between 33.5 and 40 in (850 and 1,016 mm). The child should also be at least one year old and capable of sitting upright alone, with shoulders below the shoulder belt slots for the harness system. (Page 85)