The Radian XT SL® car seat offers the first NCAP tested, high capacity LATCH system up to 80 pounds without the use of a seat belt for comfort, convenience and safety. The car seat is convertible for rear-facing children 5 to 45-pounds and forward-facing children 20 to 80-pounds in a 5-point harness. With a height-adjustable and aluminum-reinforced head support, a steel alloy frame and protective EPS foam, the car seat provides complete side impact protection. Its low profile offers amazingly easy child boarding, and with its unique patented design, it fits three-across in a mid-size car while providing more shoulder room for the child occupant. Memory foam padding and 3-in-1 infant/toddler full body support cushions provide additional comfort. Plus it folds flat for convenient travel and storage. Also features an Easy-Tite™ adjuster for quick and easy tightening that installs in one minute. Measures 28 1/2" H x 17" W x 16" D when open, 10" D when closed.