The Diono Radian 3RX is the original slim fit 3 across all-in-one convertible car seat, designed to protect from birth to booster seat (5 - 120 lb / 2.2 - 54 kg). Featuring 12 position adjustable head support, extended rear-facing up to 50 lb and steel reinforced frame, expect 10 years of safety from just one car seat. With over 20 years of design and engineering in the USA, Diono is proud to be Made of Seattle, a city like no other. Seattle’s unique cultural identity and pioneering spirit inspired the Diono difference way back in 1999 and it’s what continues to drive our innovation today. Now on any given day over a million children travel in a Diono car seat. Our love for technical product innovation and world-class engineering has seen us go from strength to strength, with an ever-evolving range of All-in-One convertible car seats, booster seats, strollers, baby carriers and accessories. So, whether you ride with us, stroll with us, carry with us - with Diono you’ll unlock the #JoyOfTheJourney.