The Monterey XT is a great booster for any booster-ready child, especially those with larger builds. It is easy to install and use. The lower anchor connectors, cup holders, and adjustable width are all very nice features that make this seat uniquely customizable. While it is bulky and won’t work well in a three-across situation, the Diono Monterey XT is definitely a great seat for bigger littles.
While there’s no set time or age for moving your child from a high back booster to a backless booster, we tend to suggest making this move when the child is able to sit properly all of the time.
Since not all big kids are ready for the responsibility of sitting properly without the reminder that the shoulder and head sections of the high back booster can provide, members of our Facebook group ask which boosters might last the longest or be the best value.