Lovingly engineered with a full steel frame, the Dione radian rate all-in-one car seat provides unmatched safety for your child from birth to booster - and every marvelous moment in between. It comfortably seats rear-facing children from 5-45 pounds, forward-facing children from 20-80 pounds in a 5-point harness, then converts to a booster seat for children up to 120 pounds. Designed with your child's security and safety as top priorities, the radian rate features a steel alloy frame, reinforced sidewalls, adjustable head support and Dione's patented Safe Stop energy absorbing harness. EPS foam surrounds your child's head and body to provide complete side impact protection. The unique Super latch system makes installation easy. Memory foam padding, infant support pillows, expandable sides, and a longer seat bottom provide extra room and comfort for your growing child. The seat is NCAP crash tested, the industry benchmark for verifying child seat performance in severe accident conditions. One cup holder is included, with the option to add up to 4 cup holders. The radian RXT folds flat for travel and fits 3 across in most mid-sized vehicles, making it the perfect choice for growing families. With a 10-year lifespan, the radian rate could be the only car seat you'll ever need.