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Diono 2019 Radian 3RXT All-in-One Convertible Car Seat (Discontinued by manufacturer)

4.7 4.7 out of 5 stars 919 ratings

To see product details, add this item to your cart. You can always remove it later.
2019
Black

Purchase options and add-ons

Brand Diono
Installation Type Latch
Material Steel, fabric, foam, plush
Color Black
Orientation Rear Facing

About this item

  • JOY OF THE JOURNEY: From birth, keep your little one rear-facing longer to 40 lbs., and as they grow to 100 lbs. (10 years approx.) our long-range lifespan protects your child facing-forward.
  • THREES NOT A CROWD: For safety that fits 3 across the Radian 3RXT packs all our innovative safety features into a sleek and slim design that allows you to fit three across (in most mid-size vehicles). Now the whole family can travel, together.Care & Cleaning: Spot or Wipe Clean, Machine Wash
  • LOVINGLY ENGINEERED: The Radian 3RXT is built with automotive-strength steel, engineered into a dual spine, which manages and dissipates energy with an unyielding structure to protect your baby. Our audible click SuperLATCH system makes installation easy
  • BUSINESS CLASS COMFORT: Inspired by the best in European style, our Radian 3RXT has bright soft fabric covers, and a memory foam seat bottom. Lined with energy absorbing foam, comfort and safety go hand in hand
  • MADE OF SEATTLE: We are from Seattle, a city where being different is the norm and so is the Radian 3RXT. It folds flat, so you can travel the world and is FAA approved for use on an aircraft, so you can take safety with you wherever you go.
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$289.99
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$19.99
Get it as soon as Tuesday, Apr 2
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$159.00
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From the manufacturer

Radian 3RXT

What makes Radian 3RXT great?

Adjust As Your Child Grows

The original 3 across

Unique Nesting Principle

Adjust As Your Child Grows

Diono car seats are built from high quality materials for durability so the Radian 3RXT will become part of the family.

The original 3 across

Radian 3’s clever design has a slimline profile that allows you to install three across in your vehicle without compromising on the roomy internal seat dimensions.

Unique 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.

The Diono difference built into every Radian

Hand-built from reinforced steel...

Extended Rear-facing

Safety from all angles with side impact protection...

Hand-built from reinforced steel...

Our automotive grade steel core at the heart the Diono convertible car seat range, designed and built without compromise. What better way to protect your child?

Extended Rear-facing

Our range of all-in-one convertible car seats are hand-built with extended ear-facing capabilities, allowing you to keep your little one rear-facing for as long as possible.

Safety from all angles with side impact protection...

All our seats go through rigorous testing protocol that simulate side impact crashes. The seats are then evaluated based on how well they contain the head, while reducing chest and pelvis acceleration.

We've thought of everything…

Travel ready

SuperLATCH installation

Build your back seat

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!*

*FMVSS213 Aircraft Inversion Report by Carlspan, Buffalo, NY and SGS Guangzhou, Guangzhou, China. 5/16/18.

SuperLATCH installation

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

Build your back seat

At Diono, we understand growing families need tailormade solutions. With our colorful range of all-in-one convertible car seats you can build your back seat in safety and style.

Radian 3R Radian 3RX Radian 3RXT Rainier 2 AX Rainier 2 AXT
Radian 3R Radian 3RX Radian 3RXT Rainier 2AX Rainier 2AXT
Customer Reviews
4.7 out of 5 stars
563
4.7 out of 5 stars
275
4.3 out of 5 stars
83
4.5 out of 5 stars
131
4.3 out of 5 stars
39
Rear Facing with lap/lap shoulder belt up to 40 lbs 45 lbs 45 lbs 50 lbs 50 lbs
Forward-facing with 5-point harness lap/lap and shoulder belt up to 65 lbs 65 lbs 65 lbs 65 lbs 65 lbs
Forward-facing booster mode up to 100 lbs 120 lbs 120 lbs 120 lbs 120 lbs
Fits 3 across/side by side in most cars
Number of Available Colors 6 5 8 7 7
Seated Torso Height 8.25" - 17″ 8.25" - 17″ 8.25" - 17″ 8.25" - 17″ 8.25" - 17″

Product Description

Life is complicated enough, and that’s why here at Diono we carefully craft our products to be intuitive and as easy to use as possible while providing the optimum level of safety and security for your little ones. Trusted by over a million parents, the Diono Radian 3RXT is our flagship all-in-one convertible car seat, designed to fit 3 across, without sacrificing safety or passenger comfort. We have spent years perfecting protection to help parents keep their children traveling the safest way, for as long as possible – our Radian series is lovingly engineered with the famous Diono Steel Core that provides an unyielding structure to protect and shield, and extended rear-facing capabilities, so you can expect 10 years of safety from just one car seat. Our unique SuperLATCH system makes installation easy and secure with an audible “click”. The Diono Radian 3RXT surrounds your child in overprotective, strong materials giving you peace of mind wherever life takes you (including in the air: the Radian 3RXT is aircraft certified / FAA approved), so you can take safety with you wherever you go. We’ve thought of everything, so you don’t have to. Rear-facing: 5-45 lbs Forward-facing: 20-65 lbs Booster mode: 50-120 lbs Seated torso height: 8.25-17"

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Technical Details

Additional Information

Warranty & Support

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Diono 2019 Radian 3RXT All-in-One Convertible Car Seat (Discontinued by manufacturer)


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This Item
Diono 2019 Radian 3RXT All-in-One Convertible Car Seat (Discontinued by manufacturer)
Diono 2019 Radian 3RXT All-in-One Convertible Car Seat (Discontinued by manufacturer)
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Price$289.99-15% $169.99
List:$199.99
$249.99$249.99-6% $149.99
List:$159.99
$329.73
Delivery
Get it Apr 2 - 5
Get it as soon as Tuesday, Apr 2
Get it Apr 4 - 5
Get it as soon as Saturday, Mar 30
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Customer Ratings
Safety Features
4.7
4.4
4.5
4.5
Easy to install
4.1
4.1
3.8
4.4
Easy to clean
4.5
4.4
4.0
Comfort
4.4
4.0
4.5
Sold By
TYE-MART
Amazon.com
Mellona US
Spreetail
Amazon.com
Amazon.com
material
Steel, fabric, foam, plush
Alloy Steel, Plastic, Polypropylene, Polystyrene
Alloy Steel, Plastic, Polypropylene, Polystyrene
Plastic, Alloy Steel, Aluminum, Polyethylene
Alloy Steel
min recommended weight
5 pounds
5 pounds
4 pounds
5 pounds
40 pounds
5 pounds
max. recommended weight
120 pounds
120 pounds
120 pounds
65.0 pounds, 50.0 pounds, 120.0 pounds
120 pounds
120 pounds
maximum height
57 inches
57 inches
57 inches
28.5 inches
63 inches
57.1 inches
minimum height
18.1 inches
18.1 inches
38.2 inches
18.1 inches
rear-facing min. weight
5 pounds
5 pounds
4 pounds
5 pounds
5 pounds
max rear facing weight
45 pounds
50 pounds
50 pounds
50 pounds

Looking for specific info?

Customer reviews

4.7 out of 5 stars
4.7 out of 5
919 global ratings

Customers say

Customers like the comfort, size and appearance of the infant toddler car seat. For example, they mention the padding feels super comfortable, it fits perfectly across and is perfect for smaller cars. They appreciate the sleek and slim appearance. That said, opinions are mixed on weight, value, and ease of installation.

AI-generated from the text of customer reviews

110 customers mention103 positive7 negative

Customers are satisfied with the quality of the infant toddler car seat. They mention it's well made, high quality, and substantial. The steel structure is very solid, and the seat isn't crushed or compromised in the middle back. Overall, customers find it to be a good seat with good safety reviews. The seat is well padded and is a high end car seat, which is practical.

"...the way back in the Camry for optimal legroom AND the car seat isn't crushed or compromised in the middle back! ORDER THE ANGLE ADJUSTER!..." Read more

"...Same goes for the second child.It's a very strong design. Easy to install and will be used for the life of your child...." Read more

"So far we enjoy this car seat! It feels insanely secure and sturdy which is the most important thing...." Read more

"...They are steel structured, and very solid. I have one for both our of our vehicles...." Read more

100 customers mention79 positive21 negative

Customers like the size of the infant toddler car seat. They say it fits perfectly across and is perfect for smaller cars. The metal frame makes it feel sturdy and the seat is compact. Some mention that it fits their camel back water bottle.

"...My older daughter loves the cup holder. Fits her camel back water bottle which is a little on the large size...." Read more

"...I love the slim fit within the car. They easily fit side by side and dont crowd into the neighboring seat...." Read more

"...this one for its slick and simple design, removable cover, and narrow width.Our 29" tall one year old seems quite comfortable in it...." Read more

"...It is really well padded. It looks really comfy and I do love how narrow it is. That’s what u r paying for. There isn’t many bells and whistles." Read more

50 customers mention40 positive10 negative

Customers like the safety of this infant toddler car seat. They say it has a great build and side impact protection that helps protect the actual car seat and the kids. The latch system and steal frame protect the kids, and the harness holds them tighter than any other. The harness also locks in really well and doesn't move.

"So far we enjoy this car seat! It feels insanely secure and sturdy which is the most important thing...." Read more

"...n't had any incidents (knock on wood), but she likes them and feels secure in them...." Read more

"...-Removable cup holder is a great feature-Great reviews on safety!..." Read more

"...The headrest adjuster is a little tough to move up and down. While the mechanism is quite simple, you really have to push it to move...." Read more

40 customers mention34 positive6 negative

Customers like the comfort of the infant toddler car seat. They say the padding feels super comfortable, it doesn't get too hot, and has lots of cushion on all sides. The parts are now covered, making the seat seams a bit more comfortable. The upgraded material is very smooth and easy to wipe for spot cleaning.

"...it came with a cup holder and the padding feels super comfortable as well...." Read more

"...I chose this one for its slick and simple design, removable cover, and narrow width...." Read more

"...I do love how sturdy it feels. It is really well padded. It looks really comfy and I do love how narrow it is. That’s what u r paying for...." Read more

"...Extra cup holder, the tray, the side seatbelt clips, the padding, easily adjustable head rest, tilt/recline, and the SuperCinch LATCH...." Read more

27 customers mention27 positive0 negative

Customers are satisfied with the appearance of the infant toddler car seat. They mention that it has a sleek and slim appearance, and is comfortable. Some appreciate the simple design and the beautiful blue color. Overall, most are happy with the product's appearance.

"...I also enjoy the minimalist look of it as it’s not over done like some car seats...." Read more

"...I chose this one for its slick and simple design, removable cover, and narrow width...." Read more

"Great looking and narrow seat. The low sides make it easier to place my daughter in the seat...." Read more

"...car, there wasn’t a scratch on them, all thanks to such an amazing company and design. I will but seats from them until we don’t need them any more...." Read more

76 customers mention40 positive36 negative

Customers are mixed about the ease of installation of the infant toddler car seat. Some mention it's pretty easy to install, with great directions. They say it'll be easy for anyone with a 3rd grade level or better. However, others say it gets confusing with the different weight requirements and use of the seat belt or latch system. They also mention the instructions are not clear and it'd be a bit complicated to figure out at first.

"...It's a very strong design. Easy to install and will be used for the life of your child. Easy to take the covers off to clean as well...." Read more

"...The instruction book is bare-bones at best, but YouTube University has lots of car seat inspector videos to help you on your way...." Read more

"...Super easy to use the seat belt or latch system too depending on whether your child is rear or forward facing and your vehicle...." Read more

"...The install is a little difficult but I haven’t met a car seat that’s not annoying at install." Read more

44 customers mention17 positive27 negative

Customers are mixed about the weight of the infant toddler car seat. Some mention it's very heavy, while others say it'll be easy to carry through the airport. The steel frame is heavy, and the narrow seat form allows for another child. However, some say the car seat is relatively light and easy to move, while still being relatively bulky.

"...It's a bit heavy, but that's due to it being well made with a metal frame." Read more

"...Heavy but folds down for flying if needed.- Out of box appears well built.Con:-..." Read more

"I'm a big guy, so I can install them but they are big and heavy, and that is WHY I BUY THEM. My wife can do it, but struggles a bit...." Read more

"...quality seat that combines wonderful safety features inside of a relatively light and easy to move frame...." Read more

23 customers mention15 positive8 negative

Customers are mixed about the value of the infant toddler car seat. Some mention that it's well worth the price, while others say that it is no longer worth the high price point. That said, some say that the compactness and the strength of these are not cheap.

"...$10 for a seat adjuster is worth every penny in legroom and in not having to buy a new car or worry about replacing a car seat at a later date...." Read more

"...Although these are not cheap, darned if they are not solid! (not to mention heavy)...." Read more

"...Lots of cushion on all sides. It’s a great product and the price was right on target." Read more

"...With a ten year expiration, definitely worth the money." Read more

Beautiful slick design, just fits in our Kia Soul
5 Stars
Beautiful slick design, just fits in our Kia Soul
We were dreading having to get a convertible car seat that takes up a ton of room in our compact 2015 Kia Soul. My research pointed to the Diono Radian 3RXT or the Graco Slimfit as the best choices. I chose this one for its slick and simple design, removable cover, and narrow width.Our 29" tall one year old seems quite comfortable in it. It gives me enough room to sit by her side as well. In its rear facing position, the seat does take up a lot of room front to back. The $10 angle adjuster is a must. When we first installed it without, it would definitely poke into the back of the front seats even more. With the adjuster, it definitely touches the shoulder of the front seats. I don't know if there are better options out there for rear facing depth but if you have a smaller car, I would not recommend this seat. As a forward facing seat, it takes up very minimal room and I would highly recommend for any sized car.During our first outing in this seat, my 1 year old got car sick and vomited, so we had to remove the cover to wash and set it up all over. The cover did not change its shape and fit right back on without a problem. Putting it back together was also pretty self explanatory, though there are some videos online you could watch for help. The headrest adjuster is a little tough to move up and down. While the mechanism is quite simple, you really have to push it to move.This seat is quite heavy at around 28 lbs, so I would not recommend this for anyone who has to shuttle this back and forth between two cars. This seat is FAA approved as well, though it may be too heavy to lug around the airport. I plan on purchasing a used FAA approved travel car seat for future flights.
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Cliente de Amazon
5.0 out of 5 stars Buen producto
Reviewed in Mexico on December 27, 2019
Style: 2019Color: BlackVerified Purchase
Maple150
5.0 out of 5 stars Diono car seats are the best.
Reviewed in Canada on May 3, 2019
Juan pastrana
5.0 out of 5 stars Excelente compra
Reviewed in Mexico on April 13, 2020
Style: 2019Color: BlackVerified Purchase
Ximena Fernandez
5.0 out of 5 stars Perfecto para poner 3 en una sola fila
Reviewed in Mexico on August 12, 2019
Style: 2019Color: BlackVerified Purchase
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