More to explore:
More on proper booster fit, most recommended, and least likely to fit.
How a high back booster should fit. www.csftl.org
Boosters Are For (Very) Big Kids
Harness or Booster: when to make the switch!
Boosters seats that fit children the best.
Proper Rear Facing Harness Fit
There is More to Measure: Learn about the importance of seated shoulder height in proper car seat fit
It is an ad but it has good booster seat info.
To be safe in a booster, kids need to have the maturity to sit correctly without leaning around, unbuckling, or slouching. If their seat belt doesn't fit right, it can't protect them! Most kids are 5-6 before they are ready. www.csftl.org
8 things you need to know about booster seat safety. Are they ready for a booster? Are they in a proper booster? How to keep them safe.
10 Ways to Stay Energized as a Mom
Why you should keep your kids harnessed in a car seat as long as possible. How to know if your kid is able to "graduate" to a booster seat, safely.