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The Diono Radian 3R is the original slimfit 3 across all-in-one convertible car seat designed to protect from baby to booster seat 5 – 120 pounds. Lovingly engineered with the famous Diono steel reinforced frame and now rear facing for even longer expect 10 years of safety from just one car seat. Designed and engineered with complete rear facing protection so you can keep them in a safe rear facing convertible car seat for longer up to 50 pounds. Built with a mechanically engineered reinforced steel frame made from automotive grade high strength steel the radian is always ready to shield and protect. And when your family grows the slimfit design will fit 3 across in most vehicles without compromising child safety or passenger comfort. As travel car seat experts Diono have naturally built in super portable and convenient features to the Radian 3R with original fold for easy transport and storage and easy remove machine washable covers. The radian is also aircraft certified FAA approved so you can take safety with you wherever you go.