Radian 3RXT Safe+


The original 3 across All-In-one Car Seat just got better. Upgraded with 18 improvements from the award-winning Radian 3RXT, the Diono Radian 3RXT Safe+ features Diono Safe+ engineering, an anti-rebound bar, and advanced Safe+ side impact protection for complete protection from birth to booster 4 - 120 lb. 

18 Upgrades From Radian 3RXT - Includes Safe+ easy adjust 12 position headrest, 6 layers of Safe+ Side impact protection, and Safe+ testing.

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 and testing to the highest safety standards to ensure we have the safest seat possible.

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.

The Original Radian 3 Across - Built with the 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 back seat.




  • Minimum User Weight: 4 lb 
  • Maximum User Weight: 120 lb 
  • Minimum User Weight - Rear Facing: 5 lb 
  • Maximum User Weight - Rear Facing: 50 lb 
  • Maximum User Weight - Rear Facing LATCH: 35 lb 
  • Minimum User Weight - Forward Facing: 22 lb 
  • Maximum User Weight - Forward Facing: 65 lb
  • Maximum User Weight - Forward Facing LATCH: 40 LB 
  • Minimum User Weight - Booster: 40 lb 
  • Maximum User Weight - Booster: 120 lb
  • Maximum User height: 57.1 in
  • Product Height: 28.5 in
  • Product Width: 17 in 
  • Product Depth: 16 in
  • Seat Weight: 30.6 lb

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