Diono Radian 3QX All in One Convertible Car Seat

Product Description

All Strollers and Car Seats generally take 10-15 business days for delivery or pickup.  For more information on time frames and availability please contact us. Thank you!

Diono Radian 3 QX is the ultimate 3 across All-in-One car seat from birth to booster (4 – 120 lb) that features 3 stages of complete rear-facing protection and all new Diono Safe+™ engineering to provide the next generation in car seat safety.

From baby's first journey the radian 3QX provides complete protection, with Safe+™ newborn travel high wedge, Safe+™ 2-in-1 infant positioning liner and Safe+™ Anti-slip harness pads for added comfort and safety.
As your child grows the Safe+™ steel anti-rebound bar increases stability and reduces rebound rotation by up to 50%, so you can keep them safely rear-facing for longer, up to 50 lbs!


  • 3 Stage Rear-Facing Protection: Features Safe+™ newborn travel high wedge, Safe+™ 2-in-1 infant positioning liner and Safe+™ steel anti-rebound bar for complete rear-facing protection.
  • Designed and engineered with all new Diono Safe+™ protection to keep your child rear-facing for even longer up to 50 lb (approx. 4 years old).
  • Safe+™  Engineering: Subjected to a combination of the most rigorous crash tests to make sure we have the safest seat possible.
  • 10 Years, 1 Seat: 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 the famous Radian slim fit design to allow 3 across in most vehicles without compromising child or passenger comfort.
  • All new upgraded steel core. Made from automotive-grade high strength steel to shield and protect.
  • Safe+™ steel anti-rebound bar that connects to the seat base in one click. Reduces rebound rotation by 50% in the event of a collision and also provides more legroom when rear-facing.
  • Engineered with the latest European Side Impact technology to improve child head containment in the event of a collision. Headrest height is increased by 22% from radian R series
  • Featuring 6 layers of interlocking EPS & EPP foam, high-density plastic and steel reinforcement to create ultimate side impact protection without compromising 3 across fit.


  • Rear-facing: 4-50 lbs
  • Forward-facing: 22-65 lbs
  • Booster mode: 40-120 lbs
  • Seated torso height: 7.5-16.5″
  • Overall maximum height: up to 57″
  • Car Seat Weight: 25.8 lbs
Vendor: Diono
Maximum quantity available reached.

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