Question: what are the requirements for a high back booster seat?
Answer: Within the range of 40 to 80 pounds but under 4'9”. Within 4 to 8 years of age and is at least 35” tall. A child who cannot sit with their back against the vehicle seat with their knees bending at the edge of the seat cushion without slouching. A child who does not fit properly in the vehicle belt system.