***Please no eating/drinking (other than water) in the car seats in order to maintain it's like new condition. Thank you so much*** Monterey XT. Suitable from 40 - 120 lbs approx. 4 - 12 years. We all know that children grow at different rates, and not one size fits all. As one of the most flexible car seats you’ll find, Monterey XT is lightweight, super portable and with adjustable headrest and expandable sides, ensures a proper fit for your little one at every age. Featuring 11 headrest positions and 2 recline positions. A simple-to-use dial on the back adjusts the width of the seat up to 20” wide, while the headrest adjusts up to 6.5” in height with one hand for an easy precise fit. Monterey XT includes our superior side impact protection with aluminum reinforced head support and energy absorbing EPS foam, to accommodate growth spurts without sacrificing protection. Equipped with simple LATCH connectors and front adjusters, Monterey XT can securely connect to your vehicle in seconds, enhancing safety and stability as well as allowing parents to switch between vehicles with ease.