The Maxi Cosi Kani is an all-in-one car seat that adapts to your child’s needs from birth to 10 years old, accommodating children from 5-100 lbs. Designed with versatility in mind, it features four modes of use to ensure safety and comfort throughout your child's growth: rear-facing, forward-facing, belt-positioning booster, and backless booster. The slim design allows for a 3-across fit in most vehicles without compromising on space or safety. Additionally, the 10-position adjustable headrest, 5-position adjustable base, and ClipQuick auto-magnetic chest clip make installation easy and secure.