The original 3 across All-in-One Car Seat just got better! Upgraded with 15 improvements from the award-winning Radian 3RXT, the Diono Radian 3RXT SafePlus features Diono SafePlus engineering, SafePlus anti-rebound bar and advanced SafePlus side impact protection for complete protection from birth to booster 4 - 120 lbs / 1.8 - 54 kg. 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. The Radian 3RXT SafePlus features SafePlus Engineering, a unique combination of engineering features and tested to the highest safety standards, to ensure the safest seat possible. The 3RXT SafePlus features a SafePlus steel anti-rebound bar to reduce rebound rotation by up to 50% for extended rear-facing travel up to 50lbs. Built with 6 layers of EPS & EPP foam, high density plastic and steel reinforcement to make ultimate side impact protection, without compromising 3 across slim fit design in most midsize vehicles. The SafePlus one hand easy adjust 12 position headrest has a 22% increase in adjustment range compared to the Radian 3RXT. Coming in a range of bold colors, there is a Radian 3RXT SafePlus to suit every child, and for added parent convenience, the Radian 3RXT SafePlus cover is hard wearing and easily removable. So, when the next journey gets messy, easily remove and machine wash. As travel car seat experts, Diono has built in super portable features to the 3RXT SafePlus, with original fold and easy transport and storage, steel-reinforced cup holders to store essential road trips and snacks. The Radian 3RXT SafePlus is also aircraft certified (FAA approved) so you can take safety with you wherever you go.