The Atlas 65 2-in-1 harness booster car seat is designed to grow with your child as a harness booster from 22 to 65 pounds to a high back booster 30 to 100 pounds. The ultra-easy Simply Safe Adjust Harness System adjusts the harness and headrest together - with no time-consuming rethreading - to 10 height positions, making it simple to keep your child properly positioned. It features a handy harness storage compartment, which allows you to keep the harness with the seat, even when you've transitioned to high back booster mode. It features dual cupholders and a machine washable seat pad, buckle cover and harness covers.