The Graco Nautilus 65 3-in-1 harness booster car seat can be used from toddler to youth, keeping your growing child safe. It secures your child in a 5-point harness from 20-65 lb, converts to a highback booster from 40-100 lb, and becomes a backless booster seat from 40-100 lb. Its Simply Safe Adjust harness allows you to adjust the harness and headrest together as your child grows, with no time-consuming rethreading. You'll appreciate the strength of the steel-reinforced frame and 3-position recline for comfort and fit while your little passenger enjoys a personal cup holder and storage compartment.