radian® 3RX
The original All-in-One convertible car seat designed to fit 3 across and with our famous steel core inside for optimum safety. Now rear-facing for even longer (up to 22.7 kg / 50 lb) and featuring all-new head support infant insert, expect 10 years of safety from just one car seat.
$379.99
What makes radian® 3RX great?
10 YEARS ONE CAR SEAT
With 4 ways to travel from birth to booster, the radian® 3RX adapts as your child grows to offer a custom fit from birth up to 54kg / 120lb
THE ORIGINAL 3 ACROSS
REAR-FACING FOR LONGER
Designed and engineered to keep your child rear-facing even longer up to 22.7kg / 50 lb (approx. 4 years old).
HEAD SUPPORT INFANT INSERT
The removable head support infant insert features padded support for cocooned comfort. Then as your infant grows simply remove.
STEEL CORE
PRODUCT SPECS
Rear-facing
2.3-22.7 kg / 5-50 lbs
Forward-facing
10-29.5 kg / 22-65 lbs
Booster mode
18-54 kg / 40-120 lbs
Seated torso height
19-42 cm / 7.5-16.5″
Overall maximum height
144.8 cm / up to 57″

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


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 22.7 kg / 50 lb to keep your child in the safest travel position for as long as possible.


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


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 22.7 kg / 50 lb 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?

Head support infant insert
The removable head support infant insert features padded support for cocooned comfort. Then as your infant grows simply remove.

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

Anti-slip XL harness pads
The 2020 radian® 3RX features all new XL hardness pads with anti-slip backing for extra comfort and safety.

Easy remove covers
Radian 3RX features easy to 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 aircraft!

Cup Holder included
radian 3RX includes a steel reinforced cup holder for those all important road trip drinks and snacks.
Questions?
can the radian 3RX fit 3-across in my car?
Most likely, yes, as long as you have 51″ (129.6 cm) 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 3RX 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?
Yes, they are required while your child is sitting in forward-facing. They are optional but recommended while sitting in rear-facing. The center buckle pad is required at all times.
can the memory foam be washed?
Yes, it can be hand washed in cold water and air dried.
what are the requirements to use the seat in booster mode?
The child must weight at least 50lbs and be at least 40 inches tall.