Child Safety Car Seat
 Child Safety Car Seat
 Child Safety Car Seat
 Child Safety Car Seat
 Child Safety Car Seat
Diono Radian 3RXT All-in-One Convertible+Booster Child Safety Car Seat Gray Slat
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Diono Radian 3RXT All-in-One Convertible+Booster Child Safety Car Seat Gray Slat

Diono Radian 3RXT All-in-One Convertible+Booster Child Safety Car Seat Gray Slat

The Diono Radian® 3RXT Is The Original 3 Across All-In-One Convertible Car Seat, Trusted By Over A Million Parents To Protect Their Child From Birth To Booster (5-120 Lbs / 2.3-54 Kg). Lovingly Engineered With The Famous Diono Steel Core And Now Rear-Facing For Even Longer. Expect 10 Years Of Safety From Just One Car Seat!  

With A Range Of Clever Features That Make 3RXT Suitable For Young Babies All The Way Through To Around 12 Years Old, This Car Seat Has Been Designed For Longevity. The Padded Infant Insert Provides Secure Travel For Your Newborn And Will Keep Them Safe And Cozy, While The Expandable Sides And 12 - Position Headrest Allow The 3RXT To Grow In Width And Height, Just Like Your Child. With Extended Rear-Facing, And Roomy Forward-Facing Position, 3RXT Is Designed To Meet Your Needs, Today, Tomorrow And Beyond.

The Radian 3RXT Is Lovingly Engineered With A Safety Core Built From High Strength Steel And Aluminum, Reinforced Sides To Maximise Protection. The Radian 3 Collection Fits 3 Across In Most Vehicles, So You Can Take The Whole Family In Safety And Comfort, Plus Our Superlatch ™ System Makes Installations Easy And Super Secure.

Installation Tips

Read The Manual The Comes With Your Car Seat
Read The Vehicle Manual
Find A Certified Child Passenger Safety Instructor Or Technician To Help You And Check Your Installations

Airline Use

Unfold The Diono Car Seat Before Boarding The Plane And Ask The Flight Attendant For Seatbelt Extenders
Make Sure To Install The Car Seat Next To The Window So Passengers Can Get By In Case Of An Emergency
Make Sure To Take The Slack Out Of The Seatbelt Extender Before Connecting To The Airplane Seatbelt

Rear-Facing Installation

First Secure The Detachable Base And Slide In The Locking Mechanism
Adjust The Harness To Be The Proper Height For Rear Facing
Adjust The Head Support To Fit Your Child Properly

Folding & Unfolding

To Unfold: Lay The Car Seat Down On A Stable Flat Surface And Undo The Velcro Strap, Tuck It In Behind The Fabric And Open Seat Until Clicked And Locked.
To Fold: Remove The Red Velcro Strap From Behind The Fabric And Loosen Up The Harness As Much As Possible So They Are At The Top Of The Car Seat. Release The Lever At The Bottom Of The Car Seat And Push Seat Inward - Secure The Top With The Red Velcro Strap.

Right For Newborn?

Whether You Buy An Infant Only Car Seat Or An All-In-One Convertible Car Seat, Both Car Seats Have To Meet The Same Standard
Seats Like The Diono All-In-One Convertible Car Seats Come With An Infant Cushion Insert To Properly Fit Your Child In The Harness
All-In-One Convertibles Are More Economical - They Have A Lot Of Room For Growth For Your Growing Child

Why parents choose:

Newborn Insert:

Removable Infant Insert Features A Travel High Wedge To Create A Lie-Flat Position. Simply Remove To Allow The 2-In-1 Liner To Give Support As Baby Grows.

The Original 3 Across:

Features A Slimline, Space Saving Design At Only 17″ Wide, That Allows You To Install Three Across In Most Vehicles.

Rear-Facing For Longer:

With Extended Rear Facing From Birth Up To 50 Lbs / 22.7 Kg To Keep Your Child In The Safest Travel Position For As Long As Possible.

Adjustable Head Support:

12 Position Adjustable Head Support Reinforced For Enhanced Side Protection


Worth The Weight:

Engineered With The Famous Diono Full Steel Core For Safety You Can Feel. This High-Strength Core Has Inherent Integrity And Forms An Unyielding Structure To Shield And Protect Your Little One.

The Nesting Principle:

The 3RXT Includes The Original Diono Nesting Insert. A Soft Infant Liner To Keep Your Little Baby Both Secure And Cozy. Then As Your Little One Grows, Simply Remove The Liner.

Extended Rear-Facing:

With Extended Rear-Facing From Birth To 45lbs / 22.7 Kg To Keep Your Little Ones In The Safest Travel Position For As Long As Possible.

Long Service:

With Up To 10 Years Of Service, This Seat Is Built From High Quality Materials For Durability. With A Large Seat Capacity For Growing Children, The Radian 3 Will Become Part Of The Family


Ergonomically Designed With Contoured Shapes, And Layers Of Luxurious Cushioning, Ensure A Comfortable Environment, With Plenty Of Room For Shoulders, Hips And Legs.

Side Impact Protection:

Protective Side Walls Are Made From Reinforced Aluminium And Coated In Thick Energy Absorbing Foam.


Our Superlatch System Makes Installation Easy And Super Secure. An Audible Click Lets You Know When Connectors Are Locked In Safe

Trend Led Design

With Designs Inspired By The Latest European Fashions, Great Looks Are Combined With Practicality. The Stylish Covers Are Made From Durable, Machine Washable Fabrics

Flat Fold:

Super Portable And Folds Flat For Easy Travel And Transporting. A Carry Strap Is Also Available.

Rear-Facing For Longer:

Now Up To 50 Lbs / 22.7 Kg  

Positioning Liner:

New 2-In-1 Infant Positioning Liner That Is Removable As Child Grows

Newborn Wedge:

Integrated Newborn Travel High Wedge Creates Near Lie-Flat Travel Position

Improved Fabrics:

New And Improved Fabrics That Are Easy To Remove And Wash


Rear-Facing – 5-50 Lbs / 2.3-22.7 Kg  
Forward-Facing – 22-65 Lbs / 10-29.5 Kg
Booster Mode – 40-120 Lbs / 18-54 Kg
Seated Torso Height – 7.5-16.5'' / 19-42 Cm
Overall Maximum Height Up To 57'' / 144.8 Cm
Weight: 26.4 Lbs / 11.97 Kg
Height – 28.5” / 72.4 Cm
Width – 17” / 43.2 Cm
Depth – 16” / 40.6 Cm
Height – 28.5” / 72.4 Cm
Width – 17” / 43.2 Cm
Depth – 7” / 17.8 Cm
Net Weight 28.4lbs / 12.67 Kg

Color: Blue, Purple, White
Size: 20, 24
Material: 100% Polyester