The ultimate 3 across All-in-One car seat from birth to booster (4 – 120 lb / 1.8 – 54 kg). Featuring 3 stages of complete rear facing protection and all new Diono Safe+™ engineering to provide the next generation in car seat safety.
Features Safe+™ newborn travel high wedge, Safe+™ 2-in-1 infant positioning liner and Safe+™ steel anti-rebound bar for complete rear-facing protection.
radian® 3QX is subjected to a combination of the most rigorous crash tests to make sure we have the safest seat possible.
Designed and engineered with all new Diono Safe+™ protection. Now you can keep your child rear facing for even longer up to 50 lb (approx. 4 years old).
With 4 ways to travel from birth to booster, the radian® 3QX adapts as your child grows to offer a custom fit from birth to 120 lb.
Built with our famous radian® slim fit design, to fit 3 across in most vehicles without compromising child or passenger comfort.
4-50 lbs / 1.8-22.7 kg
22-65 lbs / 10-29.5 kg
40-120 lbs / 18-54 kg
Seated torso height
7.5-16.5″ / 19-42 cm
Overall maximum height
up to 57″ / 144.8 cm
25.8 lbs / 11.7 kg