The Grow with You Clicktight harness-2-booster seat grows with your child from toddler to big kid. With the patented ClickTight Installation, you’ll know it’s right in 3 easy steps and 2 layers of side impact protection surround the head, neck & torso. Plus, SafeCell Impact Technology creates a crumple zone that absorbs crash energy. Accommodates front facing 25-65 lbs, booster 40-120 lbs.