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, Safe ® anti-rebound bar and advanced Safe ® side impact protection for complete protection from birth to booster 4-120 lbs (1.8-54 kg).

18 Upgrades from Radian® 3RXT
Includes Safe ® easy adjust 12 position headrest, 6 layers of Safe ® Side impact protection and Safe ® testing.
  
Fits 3 Across
Built with Diono's famous Radian® slim fit convertible design for a 3-across option only with Diono Radian® combinations, 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 lbs (22.7 kg).
 
Safe ® Engineering
Features a unique combination of engineering features and testing to the highest safety standards to ensure the safest seat possible. The Radian® 3RXT SAFE features Safe ® Steel Reinforced Frame - Mechanically engineered, reinforced steel core, made from automotive grade high strength steel to shield and protect.
 
Rear-Facing for Longer
Engineered to keep your child rear-facing for longer, up to 50 lbs ( 22.7 kg).
  
Adjustable Head Support
12 position adjustable head support reinforced for enhanced side protection.
  
SuperLACTCH Installation
The SuperLATCH system makes installation easy and super secure. An audible click lets you know when connectors are locked in safe.
 
Travel Ready
The Diono Radian 3RXT Safe is super portable and folds flat for easy travel or storage.
  
Improved Fabrics
Fabrics are easy to remove and wash.
   
10 Years 1 Car Seat
Every Radian® All-in-One Convertible Car Seat is designed to adapt as your child grows to offer a custom fit from birth to booster.
  
Certified for Aircraft Travel
Certified for use in aircraft only when in harness mode. This child restraint is not certified for use in aircraft when used in booster mode. Aircraft seats do not have shoulder belts which are required for use with this booster. 

• compatible with inflatable seatbelts on FORD MODELS ONLY