As your child grows from baby to toddler, the Marathon ClickTight convertible car seat easily transitions from rear-facing to forward-facing. Ventilated Cool Flow mesh fabric improves air flow, keeping baby cooler. With ClickTight, you can install with confidence, every time. Simply open, thread & buckle, click it closed. Plus, easy-read level indicators and a quick-push recline help you find the proper angle for your vehicle and most comfortable fit for your child. Full body side impact protection surrounds the head, neck and torso. A steel frame and crumple zone help absorb crash energy. And, the patented v-shaped tether helps slow forward movement, so you can travel with peace of mind. Quickly and easily adjust the 14-position harness and headrest with one hand for the perfect fit.