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Radian® 3RXT Safe+®

Radian® 3RXT Safe+®

Radian® 3RXT has evolved

18 upgrades from the Radian® 3RXT

Meet the latest addition to the Original 3-across Family, Radian® 3RXT Safe+®.

Designed, engineered, and tested with Safe+ the all-new Radian® 3RXT Safe+® is a combination of everything our Diono Family know and love about the award-winning all-in-one convertible car seat, but with advanced comfort, protection, and safety.

Standout features include the Safe+ anti-rebound bar to reduce rebound rotation by up to 50%. The Safe+ easy adjust 12-position headrest offers a 22% increase in occupancy from the Radian® 3RXT, and complete 3-stage newborn protection means you can travel safely with your VIP from 4 lbs. 

Discover new ways to fall in love again with Radian.

The best just got better

Safety, Style & Comfort All-in-One.


10 years one car seat

From rear-facing to forward facing Radian 3RXT Safe+® adapts as your child grows from birth to booster. Suitable from 4 - 120 lb / 1.8 - 54 kg.


The original Radian 3 across

Built with our famous Radian slim fit convertible design for a 3-across fit with any Diono Radian® combination without compromising child or passenger comfort. Feel safe having your children secure in the backseat.


Complete rear-facing protection

Safe+® steel anti-rebound bar reduces rebound rotation by up to 50% for extended rear-facing travel up to 50 lb.


Safe+® engineering

Features a unique combination of engineering features and testing to the highest safety standards to ensure we have the safest seat possible.


22% increase in occupancy space

The updated head support achieves a 22% increase in occupancy space from the original 3RXT and grows with your child to keep them safe and comfortable for up to 10 years.

Radian® 3RXT Safe+®

The original 3 across All-in-One Car Seat just got better.


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How do they compare

Radian® 3RXT Safe+®

The best just got better.

  • MSRP - $349.99
  • Slim-fit design fits 3 across
  • 10 years of use
  • Safe+ 12 position easy adjust headrest with 22% increase in occupancy
  • Safe+ anti-slip harness pad
  • Safe+ new-born travel high wedge
  • Safe+ anti-rebound bar
  • 6-layers of side impact protection
  • Extended sidewalls
  • Upgraded Safe+ steel core
  • XL cup holder
  • Premium fabrics and detailing
  • Side storage for harness cleaning/replacement
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Radian® 3RXT

The original 3 across All-in-One convertible car seat

  • MSRP: $349.99
  • Slim-fit design fits 3 across
  • 10 years of use
  • 12 positions Headrest
  • Anti-slip XL comfort harness
  • Newborn travel high wedge
  • Side impact tested
  • 2-in-1 infant positioning liner
  • Steel reinforced cup holder
  • Easy remove cover - machine wash
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