A booster only works if your child sits properly for the entire trip, every trip. Work through the readiness questions to see whether to switch now or hold the harness a while longer, and what to watch for on long drives.
Booster Seat Ready? Find Out in Under 2 Minutes
Your child asked to ditch the harness. Before you switch, run the quiz — it takes less time than buckling them in.
Answer questions about your child’s measurements and behaviour. Get a PASS / NOT YET result backed by NHTSA thresholds and AAP guidance.
Premature booster transitions are flagged in NHTSA crash data as a major injury risk. Every state has enforceable minimum weight and height requirements.
Parents, grandparents, and school run drivers responsible for children aged 4 and up.
- US Federal NHTSA / FMVSS 213
- All 50 US states
- AAP guidelines
- Canadian CMVSS provinces
Disclaimer: This tool is provided for educational and informational purposes only and does not constitute legal, safety, or professional advice. Sunferno Automotive Accessories cannot verify how products are installed, used, or attached in your specific vehicle or situation — proper installation, use, and securement are solely the responsibility of the user. Laws and regulations vary by jurisdiction and change over time; always confirm current requirements with your local authorities or a qualified professional. Sunferno products must be used strictly in accordance with manufacturer instructions and applicable regulations.