Give your Radian 3RXT headrest a refresh
Radian® 3RXT Safe+®
Enjoy worry-free buying and perks with the Diono Difference
Recieve perks when you shop on diono.com
Additional 2-Year Warranty
Receive an additional 2-year warranty on all car seats and strollers purchased from diono.com
Free Shipping on orders over $400*
Diono proudly offers free shipping on orders over $400
Unlock exclusive offers & discounts
Unlock exclusive news, offers and discounts on all diono.com products.
1-2-1 Virtual Car Seat Fitting
Book a 1-2-1 virtual car seat fitting with a member of our car seat safety team.
* T & C's apply
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, Safe+® anti-rebound bar and advanced Safe+® side impact protection for complete protection from birth to booster 4 - 120 lb / 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.
- 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.
- 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.
- Minimum User Weight: 4 lb / 1.8 kg
- Maximum User Weight: 120 lb / 54 kg
- Minimum User Weight - Rear Facing: 4 lb / 1.8 kg
- Maximum User Weight - Rear Facing: 50 lb / 22.7 kg
- Maximum User Weight - Rear Facing LATCH: 35 lb / 15.8 kg
- Minimum User Weight - Forward Facing: 22 lb / 10 kg
- Maximum User Weight - Forward Facing: 65 lb / 29.5 kg
- Maximum User Weight - Forward Facing LATCH: 40 lb / 18 kg
- Minimum User Weight - Booster: 40 lb / 18 kg
- Maximum User Weight - Booster: 120 lb / 54 kg
- Maximum User Height: 57.1 in / 145 cm
- Number of Head Support Positions: 12
- Product Height: 28.5 in / 72.4 cm
- Product Width: 17 in / 43.2 cm
- Product Depth: 16 in / 40.6 cm
- Seat Weight: 30.6 lb / 13.9 kg
- Product Height - Folded: 28.5 in / 72.4 cm
- Product Width - Folded: 17 in / 43.2 cm
- Product Depth - Folded: 11.5 in / 29.2 cm
The Diono Difference
Plays well with
Customers Also loved
The ultimate 3 across All-in-One car seat from birth to booster.
The original 3 across All-in-One convertible car seat
The advanced 3 across All-in-One car seat from birth to booster.
The luxury 3 across All-in-One
The luxe 3 across All-in-One convertible car seat
The original expandable booster has evolved
Slim design booster with safety built in