4-in-1 seat gives you 10 years of use it seamlessly transforms from rear-facing harness (5-40 lb), to forward-facing harness (22-65 lb), to highback booster (40-100 lb), to backless booster (40 -120 lb).Simply Safe Adjust Harness System adjusts the height of your harness and headrest, in one motion, to ensure that your child is always properly secured. Graco Protect Plus Engineered a combination of the most rigorous crash tests that helps to protect your child in frontal, side, rear & rollover crashes. One-hand, 10-position head rest makes it easy to give your growing child a proper fit for optimal safety. 6 position recline keeps your child comfy and helps for a better installation.