from toddlers 2 teens

Britax Monarch Booster Car Seat Meticulously engineered to meet the highest safety standards, the Monarch has a revolutionary design and innovative comfort details, making it one of our best-selling styles. The strong, sturdy shell features enhanced side-impact foam protection, with side wings to cocoon your child's head, shoulders, and torso in the event of a crash. It has a one-handed, adjustable-height headrest to keep up with your child's growth spurts, plus color-coded belt guides for easy installation.