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Diono Radian 3RXT, 4-in-1 Convertible Extended Rear & Forward Facing Car Seat, Steel Core, Ultimate Safety and Protection, Slim Design - Fits 3 Across, Jet Black

4.7 out of 5 stars 2,212 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in Convertible Child Safety Car Seats by Diono

List Price: $349.99 Details
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2020
Black Jet

Enhance your purchase

Brand Diono
Installation Type Latch
Material Alloy Steel, Plastic
Color Black Jet
Orientation Convertible Seat

About this item

  • SAFE & COMFORTABLE NEWBORN POSITIONING: Features newborn travel high wedge to create a safe and secure lie-flat travel position. The innovative technology pushes baby up to reduce head slump while helping to keep airways open. As your baby grows, simply remove the wedge to allow the 2-in-1 infant positioning liner for support
  • REAR-FACING FOR LONGER: This slimfit convertible car seat is designed and engineered to keep your child rear facing even longer up to 50 lb/ 22. 7 kg, approx. 4 years old
  • 10 YEARS ONE CAR SEAT: With 4 ways to travel safely from birth to booster, the radian 3RXT adapts as your child grows to offer a custom adjustable fit from birth to 120 lbs
  • REINFORCED STEEL CORE: Mechanically engineered, reinforced steel core, made from automotive grade high density plastic and steel to create the ultimate protection for your child
  • THE ORIGINAL 3 ACROSS: Built with our famous radian slim fit convertible design, to fit 3 across in most vehicles without compromising child or passenger comfort. Feel safe having your children secure in the backseat
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Frequently bought together

  • Diono Radian 3RXT, 4-in-1 Convertible Extended Rear & Forward Facing Car Seat, Steel Core, Ultimate Safety and Protection, Sl
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  • Diono Ultra Mat Pack Full Size Car Seat Protectors For Under Car Seat, Crash Tested With Premium Ultra Thick Padding For Dura
  • +
  • Diono Angle Adjuster for Radian and Rainier Car Seats, Grey (60321)
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From the manufacturer

Diono Radian 3RXT all in one convertible car seat
Diono Radian 3RXT 10 years one car seat - for rear and forward facing
Radian 3RXT rear facing for longer and slim fit for 3 across
Radian 3RXT Radian 3QX Radian 3QXT
Radian 3RXT Radian 3QX Radian 3QXT
MRSP 329.99 US Dollars 369.99 US Dollars 399.99 US Dollars
Weight limits (lbs) RF: 5-50 FF: 22-120 RF: 4-50 FF: 22-120 RF: 4-50 FF: 22-120
Rear-facing weight up to 50 lbs up to 50 lbs up to 50 lbs
Newborn Protection 2-in-1 Advanced 3-in1 Advanced 4-in-1
Safe+ engineering
Head support 12 Position Safe+ 12 Position Safe+ 12 Position
Cup Holder

Compare with similar items


Diono Radian 3RXT, 4-in-1 Convertible Extended Rear & Forward Facing Car Seat, Steel Core, Ultimate Safety and Protection, Slim Design - Fits 3 Across, Jet Black
Diono Radian 3R, 3-in-1 Convertible Car Seat, Rear Facing & Forward Facing, 10 Years 1 Car Seat, Slim Fit 3 Across, Black Jet
Diono Radian 3RX 3-in-1 Rear and Forward Facing Convertible Car Seat, Adjustable Head Support & Infant Insert, 10 Years 1 Car Seat Ultimate Safety and Protection, Slim Fit 3 Across, Pink Blossom
Diono Radian 3QX 4-in-1 Rear & Forward Facing Convertible Car Seat, Safe+ Engineering 3 Stage Infant Protection, 10 Years 1 Car Seat, Ultimate Protection, Slim Fit 3 Across, Purple Plum
Diono Radian 3QXT 4-in-1 Rear and Forward Facing Convertible Car Seat, Safe Plus Engineering, 4 Stage Infant Protection, 10 Years 1 Car Seat, Slim Design - Fits 3 Across, Gray Slate
Diono Radian 3RXT, 4-in-1 Convertible Car Seat, Rear and Forward Facing, Steel Core, 10 Years 1 Car Seat, Ultimate Safety and Protection, Slim Fit 3 Across, Blue Sky
Customer Rating 4.7 out of 5 stars (2212) 4.8 out of 5 stars (2606) 4.8 out of 5 stars (10) 4.6 out of 5 stars (398) 4.6 out of 5 stars (438) 4.7 out of 5 stars (2212)
Price $258.99 $191.33 $241.36 $349.00 $399.99 $258.99
Sold By Amazon.com Amazon.com Amazon.com CapitalKidz Amazon.com Amazon.com
Brand Name Diono Diono Diono Diono Diono Diono
Color Black Jet Black Jet Pink Blossom Purple Plum Gray Slate Blue Sky
Item Dimensions 16 x 17 x 28.5 inches 16 x 17 x 28.5 inches 16 x 17 x 28.5 inches 16 x 17 x 28.5 inches 16 x 17 x 28.5 inches 16 x 17 x 28.5 inches
Size 1 Count (Pack of 1) 1 Count (Pack of 1) 1 Count (Pack of 1) 16x17x28.5 Inch (Pack of 1) 1 Count (Pack of 1) 1 Count (Pack of 1)

Product description

Style:2020  |  Color:Black Jet

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. The 2020 Radian 3RXT provides safe and comfortable newborn positioning thanks to the new 2-in-1 infant positioning liner with integrated newborn travel high wedge. The wedge creates a lie-flat travel position, pushing baby up to reduce head slump while helping to keep airways open. As your baby grows, simply remove the wedge to allow the 2-in-1 infant positioning liner to give extra infant comfort and toddler support. Designed and engineered with complete rear facing protection, radian 3RXT will keep now your precious cargo rear facing for even longer up to 50 lb / 22.7 kg, approx. 4 years old. Then as they transition to forward facing, the aluminum reinforced headrest can be adjusted to one of 12 positions for safety that grows with them up to 57” / 145 cm tall. Built with a mechanically engineered, reinforced steel core, made from automotive grade high strength steel, the radian is always ready to shield and protect. And when your family grows, the slim fit design will fit 3 acrosin most vehicles without compromising child safety or passenger comfort. As travel experts, Diono have naturally built in super portable features to the radian 3RXT with original fold for easy transport and storage and steel reinforced cup holders to store essential road trip drinks and snacks. The radian is also aircraft certified (FAA approved), so you can take safety with you wherever you go!

Product information

Style:2020  |  Color:Black Jet

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Customer reviews

4.7 out of 5 stars
4.7 out of 5
2,212 global ratings
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Top reviews from the United States

Reviewed in the United States on March 8, 2020
Style: 2020Color: Black JetVerified Purchase
Customer image
4.0 out of 5 stars I want to love this like my RTX, but they went cheap for cover, that's what's new in 2020 for 3RTX
By Kay on March 8, 2020
We bought a Radian RXT in 2018 for our second child and loved it. It is easily the most secure car seat I have ever strapped my kid into, and we have owned a lot of Graco and installed in several different models and types of car. Also the easiest install, I've fought for more than 30 minutes in my mom's Ford Explorer with Graco and wanted to set the car on fire afterward for her making me move it over in 105 degree Texas weather. It is heavy, but I install mine and won't move it for any force in heaven or hell unless I am flying, so its not like I do a daily ruck march with it.

Unfortunately, Diono is charging the same price they did for once a premium fabric car seat cover and giving you a crappy, thin car seat cover. Just feeling the difference between the two year models, you can tell they downgraded for the 3RXT severely since putting out the RXT. It has less padding, it is much thinner and I don't see how it isn't going to pill in the wash. My kid is going to destroy it.

I've included pics of old versus new for reference, but most of it is in the "feel".

I find this very disappointing, because you want a quality fabric in a "upper trim" series car seat that is supposed to last 10 years and costs $300. It's the same cheap, slick microfiber that I have on a couple of wal-mart $30 booster seats, or on universal car covers. I imagine it will turn green/gray in the sun just like those did. My Radian RXT is the same color it was when I bought it and even at two years older, looks better and its been washed a zillion times.

At first, I thought they sent me a car seat with the wrong cover, because it says "Radian R" and my RXT was embroidered on, not stamped on the fabric like this one. It also shows on the box as "Radian RXT", so I think my confusion is reasonable. Then I looked at the pictures on their website and Amazon. Nope. They are all universally the same crappy fabric across the entire Radian series.

Shame on you, Diono, car seats are expensive enough when you have to replace them constantly as you have kids, or have more than one so you aren't dealing with the logistics of switching cars with your spouse or parents just to get kids from point A to point B. And parents could easily save themselves $100 or $200 by buying something a little less "premium".

Removing a star for the cheapness, because seeing it there makes me wonder if they are as "premium and innovative" as Diono claims. Companies that do things well would do well to do it across the board, especially if they want repeat business. I came back because I loved the RTX so much. Not sure if I needed another one that I would come back for a "4RTX" or whatever comes next unless they go back to better covers.

For reference, these install amazingly well in Toyota Corolla, Sienna and Highlander and even the tiny Prius, but rear face in a Prius puts the front seat up too far for anyone over 5'6 to sit comfortably (basically every adult in our family). It will install in a Ford Explorer, but you will still be angry if its leather, cause they really didn't want anyone to get anywhere near their latch to actually use them and they are set too close together, so actually cranking down and getting the seat tight enough is a hassle, but easier than installing a Graco carrier or convertible car seat. Don't let an entertainment package on a Ford Explorer fool you, not a young family with car seats car. :p
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101 people found this helpful
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Reviewed in the United States on March 24, 2019
Style: 3RXTColor: Dark GreyVerified Purchase
55 people found this helpful
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Reviewed in the United States on September 15, 2019
Style: 3RXTColor: Dark GreyVerified Purchase
30 people found this helpful
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Reviewed in the United States on February 24, 2020
Style: 2020Color: Purple PlumVerified Purchase
Customer image
4.0 out of 5 stars These car seats are perfect for our situation
By Jenni on February 24, 2020
These car seats are perfect for our situation. We’re expecting our third child in June but need to do 3 across in our 2019 Chevrolet Equinox. We have a graco infant carrier and 2 Diono seats in the back of our car, one forward facing and one rear facing. They fit perfectly. Only complaint is the install. We’ve only ever had graco seats and they install a lot more easily than these. But overall we’re happy and would recommend these seats.
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17 people found this helpful
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Top reviews from other countries

JC
3.0 out of 5 stars Cheap fabric, unfinished look and easy install!
Reviewed in Canada on May 3, 2020
Style: 2020Color: Black JetVerified Purchase
4 people found this helpful
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Gina
5.0 out of 5 stars Pleased! Buying a 2nd
Reviewed in Canada on November 9, 2020
Style: 2020Color: Black JetVerified Purchase
2 people found this helpful
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Amazon Customer
2.0 out of 5 stars Stitches coming off. Cheaply made. (sadly)
Reviewed in Canada on May 1, 2020
Style: 2020Color: Purple PlumVerified Purchase
Customer image
2.0 out of 5 stars Stitches coming off. Cheaply made. (sadly)
Reviewed in Canada on May 1, 2020
Arrived today, not more than an hour and I didn't wait long to write a review. I was so excited to receive this car seat because I was expecting that the quality would be good. I am over and beyond disappointed with this product. 1st thing I noticed was the quality of the fabric. Material is cheap. Stitches are coming off and the wedge foam doesn't fit well. It felt like it is a joke. Too expensive for a $400 car seat. It seemed like it has been washed a couple of times and then sold as brand new! User manual not enough info, e.g. Adjusting the bottom buckle harness to the middle. Things like that. I will sadly return this car seat. The only thing I like about it is the colour.
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2 people found this helpful
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Michael montgomery
2.0 out of 5 stars Doesn't install tight
Reviewed in Canada on May 26, 2021
Style: 2020Color: Gray SlateVerified Purchase
One person found this helpful
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Tony C
2.0 out of 5 stars Buena silla, pero solo para niños pequeños.
Reviewed in Mexico on October 11, 2021
Style: 2020Color: Black JetVerified Purchase
Customer image
2.0 out of 5 stars Buena silla, pero solo para niños pequeños.
Reviewed in Mexico on October 11, 2021
Compre esta silla porque está muy angosta, y porque dice que caben niños de hasta 1.44mts de estatura, mi hijo mide 1.18mts, así que pensé que aún le seguiría quedando por mucho tiempo.

La silla para empezar no trae ni instructivo, lo busqué en internet, y no hay nada intuitivo (como en las sillas chicco), y mi hijo apenas cupo, está al límite de la cabecera. Esta cabecera por cierto, no hay forma de subirla más, como se ve en la foto, es lo máximo que sube, y ya los hombros de mi hijo quedan ahí. Por lo tanto quizás sea para niños aún mas altos, pero removiendo por completo la cabecera, lo cual la hace menos segura.
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