The Cosco Kids™ Rise LX Booster Car Seat keeps your family moving by making it easy for kids to buckle themselves in. The seat features a smart design with a wider base and higher arm rests that make it simple for your child to put on their own seatbelt. The stable platform of the seat also allows children to get in and out of the seat without it tipping. This booster car seat keeps kids properly positioned from 40–100 lbs. and 43 –57 and fits 3 across the back seat of most vehicles.