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radian® 3RXT

the original 3 across All-in-One car seat

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radian® 3RXT

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 lb / 2.2 kg – 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.

 

$329.99 $279.99

 
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What makes radian® 3RXT great?

MULTI AWARD-WINNING ALL-IN-ONE

SAFE & COMFORTABLE NEWBORN POSITIONING

Features newborn travel high wedge to create a lie-flat travel position. Then as your baby grows, simply remove the wedge to allow the 2-in-1 infant positioning line to give a cozy, comforting support. 

10 YEARS ONE CAR SEAT

With 4 ways to travel from birth to booster, the radian® 3RXT adapts as your child grows to offer a custom fit from birth up to 120lb / 54kg.

THE ORIGINAL 3 ACROSS

Built with our famous radian® slim fit design, to fit 3 across in most vehicles without compromising child or passenger comfort.

REAR-FACING FOR LONGER

Designed and engineered to keep your child rear facing for even longer up to 50 lb / 22.7kg (approx. 4 years old).

STEEL CORE

Mechanically engineered, reinforced steel core, made from automotive grade high strength steel to shield and protect.

PRODUCT SPECS

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 

With 4 ways to travel from birth to booster, radian® adapts as your child grows to offer a custom fit from birth up to 120 lb / 54 kg.

Built with our famous radian® slim fit design, to fit 3 across in most vehicles without compromising child or passenger comfort.

With extended rear-facing from birth up to 50 lb / 22.7 kg to keep your child in the safest travel position for as long as possible.

Key product features and benefits

Steel Core
Mechanically engineered, reinforced steel core. Made from automotive grade high strength steel. What better way to protect your child?

Safe & comfortable newborn positioning
The removable infant insert features newborn travel high wedge to create a lie-flat travel position. Then as your baby grows, simply remove the wedge to allow the 2-in-1 infant positioning liner to give cozy, comforting support.

Safety from all angles with side impact position … 
Aluminium reinforced sides and thick energy absorbing foam distributes crash forces.

2-in-1 infant positioning liner
2-in-1 infant positioning liner with integrated newborn travel high wedge. As your baby grows, simply remove the wedge to allow the 2-in-1 infant positioning liner to give extra comfort and infant support.

12 position adjustable headrest
radian 3RXT features an aluminium reinfornced headrest, that can be adjusted to one of 12 positions to protect up to 57″ / 145 cm tall. 

Easy remove covers
Radian 3RXT features easy remove covers. So when the next journey gets messy, easily remove to machine wash.

SuperLATCH™ installation
Our SuperLATCH™ system makes installation easy and super secure. An audible click lets you know when connectors are locked in safe.

Travel ready
Radian car seats are super portable and fold flat for easy travel. They are also FAA Approved and certified for use on an aircraft!

what’s the diono.com difference? 

Additional 2 year warranty*

Receive an additional 2-years warranty on all car seats and strollers purchased from diono.com. *T&C’s apply

FREE Shipping on orders over $200*

Diono proudly offers free shipping on orders over $200. *T&C’s apply

Join the Very Important Passenger Club

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

Questions?

can the radian 3RXT fit-across in my car?

Most likely, yes, as long as you have 54” (137cm) in the back row from vehicle armrest to armrest. It may be necessary to install all three using the vehicle seat belt system.

can the harness straps be cleaned?

Yes, we recommend using a damp cloth with a solution of water and baking soda to wipe the straps clean. They cannot be saturated in any liquid, or they will need to be replaced. Replacement harness straps can be purchased on our website.

can I use the radian 3RXT from birth?

Yes, the weight limits on all our convertible car seats starts at 5lbs. The newborn must also meet a length requirement where the top of their shoulders reaches the lowest harness slot on the seat.

are the harness pads and buckle pads required on my seat?

The harness pads can be used at the parent’s discretion for this product.