ITEM# 16012

Diono Radian RXT Convertible + Booster Car Seat - Sunburst

This item is discontinued.

5-45 lbs

20-120 LBS


28.5 H x 17 W x 16 D

Cup holder

Full steel frame and aluminum reinforced sides for unmatched safety.

Comfortably fits 3 across in most mid-size vehicles.

Folds flat for storage and travel - you can even take it on the go with handy carry straps (sold separately).

Travel-friendly and FAA certified for aircraft use!

The Radian?RXT Car Seats are designed with your child's security and safety as top priorities. Premium materials and thoughtful safety features like a steel alloy frame, aluminum reinforced side walls, energy absorbing EPS foam, and a five-point harness put your mind at ease as your little one stays safe and sound. The reinforced adjustable head support provides additional side impact protection.


  • Full steel frame and aluminum reinforced sides for unmatched safety
  • Comfortably seats rear-facing children from 5-45 lbs, forward-facing children from 20-80 lbs in a 5-point harness, then converts to a booster for children up to 120 lbs.
  • Unique SuperLATCH system that makes installation easy
  • It also fits 3 across in a mid-size vehicle, folds flat for travel and is FAA certified
  • Booster mode from 50 -120 lbs (40 to 57 inches)
  • NCAP crash tested, the industry benchmark for verifying child seat performance in severe accident conditions
  • Infant body support cushions and memory foam for added comfort
  • Energy absorbing EPS foam and side impact protection provides added safety
  • Safestop? energy-absorbing harness
  • Additional forward-facing recline position to accommodate different types of contoured vehicle seats, 12-position adjustable headrest, 5 shoulder and 3 buckle positions deliver a comfortable ride.
  • Rear-facing tether capability
  • LATCH installation up to 80 lbs
  • Expandable sides and long seat bottom allow proper leg support
  • Low-sitting profile makes it easy for your child to board
  • Angled cup holder keeps a variety of drinks upright and within easy reach
  • Cover is machine washable and dryable
  • Rubber bottom grips for no-slip installation
  • 10 year life


Open 28.5" H x 17" W x 16" D
Folded 28.5" H x 17" W x 10" D
Weight 24 lbs
CARE Hand wash or machine wash only in front loading machine. Line dry or tumble dry on low temperature.
Product Reviews
out of 5.0
388 Reviews
Ratings Snapshot
of Reviewers
Waukesha, WI
Verified Buyer
Great seat if you need to fit three car seats in one row
June 8, 2014
I have a four year old and twin 1 year olds. I originally bought two rear facing only seats for my twins (had to do some research to find three that would all fit in my car). Now that I moved my twins to forward facing I had to purchase another two seats for them that would fit along with the booster I have for my four year old. These seats are narrow enough to easily fit three across either forward facing OR rear facing. I have one fairy wide booster seat + two Radians and while its a bit tight, it easily works. I've also moved all three to different cars and it fit all of them without issues. If I had three Radians it would be even be easier (since my booster is a few inches wider than these seats). My kids like the seats, seem comfortable to them, and are easy to buckle them in with. I didn't try rear facing with the kids in them, but I put them in the car just to see and space was ok that was too. I currently have 10 car seats including my two Radians, and these are one of the easiest ones to install of the bunch.If you are looking to fit three kids in a standard car (I have a Tucson and an Altima), I would recommend going with these. My only regret is that I didn't purchase these originally instead of buying separate infant carriers.
  • fits three across in a standard size vehicle (Camry, Fusion, Altima, etc). Rear facing OR front facing.
  • Easy to install
  • Easy to buckle children in
  • Seems comfortable
  • nothing I've noticed
Charlotte, North Carolina
Verified Buyer
Great Travel Car Seat
September 6, 2022
This car seat is a very solid and travel-friendly car seat. I was able to take it to the airport with no issues.
Scottsdale, AZ
Verified Buyer
Nice seat
May 28, 2022
My daughter loves her diono car seat. We go on lots of road trips and she says it’s a comfortable ride. Also slim and makes sitting in the back with you comfy too. From what I’ve researched it’s a very safe car seat! We have 3 diono car seats and I recommend them to everyone!
Denver, CO
Verified Buyer
Love this car seat
May 3, 2022
We love this car seat so much. My only complaints are that it is extremely heavy and it’s not very easy to clean. But, it’s a car seat and does not leave my car very much. We have 3 of these and will likely purchase another as we are expecting baby #4.
  • Safe
  • Durable
  • Slim
  • Heavy
  • Not easy to clean
Verified Buyer
Great quality
April 28, 2021
The design is good and the quality is good. We wish the installation could be made easier. I like that it be can be converted into a booster once weights reaches 50 lbs.
Verified Buyer
Great for putting multiple children in a row
October 14, 2020
We searched and read so many things about car seats. We are happy with the Diono Radian RXT and Albee baby had the best price we could find. We ordered two one for each car. The reason we went with the Diono was because of their safety rating and that it was versatile. We have a tendency to have small babies in our family and they outgrow because of height more than weight. The Diono offers us confidence that if in a wreck the babies will be safe. I would recommend checking out the videos on how to put the carseat in the car and also considering the wedge if your child is going to be rear facing. We bought the wedge and it was totally worth it for us. Now she is older, almost 3, we have turned it around and she never complains about the seat and has no problems on long drives. I would recommend it for sure. Wish I could give it more stars. We LOVE it.
  • Safety, comfortable, doesn't take up much room, easy to use buckles, 3 way harness, can attach different ways depending on the car, good quality.
  • you need to read the instructions or watch the video to make sure you have it installed properly, Think the wedge is needed if you are using in the rear facing mode
SLC, Utah
Verified Buyer
Happy with Diono car seats
June 19, 2020
While this particular Diono is discontinued, I was happy enough with this car seat to purchase a second one and am very happy with both. Slim and comfortable, and heavy duty.
  • Slim, comfortable, safe
Moorhead, Minnesota
Verified Buyer
Great sit to fit 3 across
May 6, 2020
Our kids like the seats, they are comfortable.
Moorhead, Minnesota
Verified Buyer
Great seat - we needed three in a row
May 6, 2020
We have been very pleased with this seat. It fit three in the back of our town and country. The kids say it is comfortable.
Verified Buyer
Great Seat
May 4, 2020
Sturdy and well made. This will last for a long time.
  • On the heavy side; but this is also a pro as it is very strong and safe
Hubert, North Carolina
Verified Buyer
Great carseat
April 20, 2020
My 4 year old enjoys this seat and find it very comfortable. I like that the seat fits easily in the center seat in our car where most other seats wouldnt fit.
Calais, Maine
Verified Buyer
Great carseat!
April 19, 2020
I love how narrow but comfortable this seat is. It was easy to adjust and install. I can finally fit two carseats and a person in the back seat again!
  • Narrow
  • Comfortable
  • Fits in a Nissan Altima
Lafayette la
Verified Buyer
Great seat
April 12, 2020
I love it so much I bought my new baby one too
J R.
Laurel, MD
Verified Buyer
January 23, 2020
This is the car seat you need. Look no further. Outstanding. This is our second purchase of the same car seat, so we now have two kids using the same model seat: 2.5 y/o forward facing, and 1 y/o rear facing. No complaints whatsoever.
Verified Buyer
Small footprint
January 16, 2020
Great safe seat with a small footprint if you do not have huge seats in your car! Recommend
Verified Buyer
Awesome car seat for all ages!
December 20, 2019
We now own three new ones and two older ones for our three kids and two cars and could not be happier. Easy to install. Last 10 years! and easy to clean!
Verified Buyer
Thank you
December 12, 2019
Thank you fir your quickly delievery.
This seat is very substantial.
Syracuse, NY
Verified Buyer
Love this car seat!
December 2, 2019
This love this car seat so much that when we had another child we bought another two for multiple cars! It is heavy, but I love that it has a steel frame which to me means safety! Super safe but also a slimmer design so you can put 3 across which is a plus when you have multiple kids and not a ton of space in the back seat. This is a quality item and so worth it when it comes to keeping your little ones safe and comfortable on road trips! It will last their entire childhood (Car seat/booster years) since it’s rated up tI 120lbs. So for me it was with the investment in getting several of these car seats. Love my Diono!
Colorado Springs, CO
Verified Buyer
Good but not great
November 14, 2019
good but not great. Sturdy construction. Quality compares to the higher end Britax seats we’ve had, which is hands above any Graco product (for comparison). Bought this as an all-in-one car seat because it is so adaptable, and we’ve seen many changes in the last 10years of having kids.

Very versatile
Customizes to all different sizes of children
Quality is great
All in one, so no more car seat buying
Narrow, so we can usually fit 3 across

Installation is not as easy as Britax click-tight car seats. In fact, installation could be difficult in some vehicles
Putting in a middle seat position is still tricky
Very long front-to-back in rear facing position, even though it’s narrow
Can’t fit 3-across when used in conjunction with our Britax (but that’s because the Britax is a monster)
  • Lasts a really long time, quality build, grows with all stages across childs development, narrow
Best Uses
  • Three across or multiple children in one car
  • Stays in one place and one car after installation
  • Installation somewhat difficult
  • Car seat is heavy
San Jose, California
Verified Buyer
November 6, 2019
This chair is narrow and tall which means you can fit 3 chairs in the backseat. I like the color and quality of this chair. Great value.
Amber O.
Verified Buyer
Diono car seats
October 9, 2019
I love the seats and they came very quickly
Driftwood, Texas
Verified Buyer
Comfortable carseat
October 8, 2019
My daughter turned to 2 and we decided to upgrade her car seat. She likes it very much. You can tell there is much more space and very comfortable. Will definitely buy one more for my son.
Minneapolis, NN
Verified Buyer
Super nice
October 7, 2019
Super nice easy to install.
  • H
  • Heavy
Salt Lake City, Utah
Verified Buyer
September 27, 2019
This is the 5th car seat we have purchased over the last few years and we bought it mainly based on size reviews. This is a very narrow carseat compared to others we have used (Graco and safety 1st being the other ones). We have it rear facing for the next few months until our child is large enough to be forward facing. We have it in our van and there is barely enough room to fit it behind my seat. It would not fit behind my husband's as he needs the seat all the way back. It is HEAVY though. Be aware. It is not a seat you want to be transfering often from vehicles. It was very easy to assemble. Took maybe 15 minutes, and the straps will be simple to adjust as child grows. We are very happy with the purchase and will probably buy another one to replace our other child's seat because of the narrow size.
  • Easy assembly and install. Looks to be easy to remove cover and clean as well.
  • Not ideal as a transfer car seat from car to car as it is heavy and bulky to carry. However it does fold up for carrying.
Bismarck, ND
Verified Buyer
Sturdy but difficult
September 24, 2019
I don’t recommend for rearfacing. It takes up a lot of room front to back so my husband can’t deive my car.
Forward facing is great, and I like how long the seat lasts before expiration
Meg H.
Atlanta, GA
Verified Buyer
Great Seat!
September 20, 2019
I am very pleased with this seat so far. It is big, but the angle adjuster did help to give me a little more room up front. A lot of folks complained about the install, but I didn't have much issue - I read the directions and got everything set up before hand, and it just takes a little muscle but not really more than I was expecting for any seat. My baby seems to like it. He use to get upset about being in the infant bucket, but he seems to feel less pinned down in this due tot he lower sides and he can look around and see out the window well. Because of the lower sides, I don't have to adjust the harness as much to get him in and out.
Wilmington De
Verified Buyer
Love this carseat!
September 18, 2019
I love this carseat so much. I love that it is slimmer than most and less of a "bowl" to put your child in, making it so much easier to get my son in and out of it. I also love the ratchet tightening function as well so I dont have to struggle as much to tighten the straps. I bought this carseat for my first son and when it came to my second son, it was the easiest decision to buy a second one. I highly recommend this seat!
  • Easy to get your child in and out
  • Easy to tighten and loosen straps
  • Slim profile
  • None
Oklahoma City, Oklahoma
Verified Buyer
Our favorite car seat!
September 13, 2019
For the last three years we’ve had Diono Raniers and absolutely loved them. Baby number three is due in November so we ordered these seats to be able to fit three across in our Dodge Journey. We’ve not gotten much use out of them yet but our experience with Diono seats and products has been amazing. Easy to clean and great diono brand extras like seat protectors and angle adjusters. They are a little long front to back in our vehicle when rear facing without the angle adjuster, but with it my husband and I (5’10” and 5’4”) can ride comfortably. We won’t use our third seat until the baby is a bit older but we were able to still manage 2 of these seats and an infant carrier and it all fits perfectly. Our three and four year old kids love their new seats as well. They aren’t the least bit cramped even though these are a bit more narrow than the Raniers. Highly recommend Diono!
Midland, Texas
Verified Buyer
Love it!
September 11, 2019
Very easy to install! My 5 year old can still use the harness, and there’s room to grow! I wish I bought this car seat when he was an infant it would’ve been the only one he needs! Definitely recommend, especially if you need a narrow car seat that is comfortable for a child!
Mason city iowa
Verified Buyer
Wont buy another brand
September 11, 2019
This carseat is beyond ny expectations. For a compact car, THIS IS HEAVEN! it is very heavy, if you move it from car to car i wouldnt choose this one. I got this one to stay in place in my car, her old one we move around because its a lot lighter.
I finally feel like she is actually safe in the car. Lastly, getting her in and out of the seat is alot easier also.
  • Small size
  • Very sturdy
  • Seems safer than normal
Best Uses
  • For compact spaces
  • For safety
  • For peace of mind
  • Not a breeze to install
Petaluma, CA
Verified Buyer
Great quality, sturdy and lightweight
September 8, 2019
I've had the Diono R100 and loved it before but they don't make them anymore. I went with the upgraded replacement which is the RXT and it is the same frame plus added side head support. It is also still narrow enough to fit 3 side-by-side which I need! I bought 3 of the same and the 3 kids are comfortable and the youngest is still rear-facing in the same seat, but we'll remove the base when we turn her around and will have 3 identical seats, all sturdy and comfy!
Arlington TN
Verified Buyer
August 30, 2019
Fantastic car seats! Durable, safe and not bulky. Very satisfied!!!
Plainfield , In
Verified Buyer
Love this brand
August 25, 2019
Love this carseat. When it came time to replace/purchase an additional car seat for our family this is the only brand we would consider. They are really heavy, but so easy to install and slim fitting to allow maximum positioning within the car.
  • Easy to install, sturdy
Best Uses
  • Needed something that would work for my older (6) older, petite daughter and also work for our toddler. This was a perfect harness seat to allow us to keep our older child in a harness and yet still work well for our 2 year old too.
  • Weighs a lot but quality and ease of installation make up for it.
Ligonier, PA
Verified Buyer
This is the fourth!
August 3, 2019
This is the fourth seat we have bought like this, who can beat having a steal frame? The safety these seats provide for our kids is unfathomable and I'm so happy my husband found them in a magazine while I was pregnant with our first!
  • Lifetime seat
  • steal frame
  • rear facing for so long
Best Uses
  • children, generally ;)
Hobbs NM
Verified Buyer
Love it!
July 15, 2019
This seat is absolutely the best car seat I’ve bought. It’s so pretty and soft and most importantly super safe. Have 5 kids can’t wait to buy them all one.
Verified Buyer
Absolutely love
July 5, 2019
Best car seat. Perfect for traveling
Clarksville, Tennessee
Verified Buyer
June 3, 2019
These seats are great! I love the look and features. Most importantly, they stand up in a crash. I was hit in my rear side door (where my daughter was located) and the rear tire. My daughter slept through the impact and was unharmed. I wouldn't put my kids in any other seat!
  • Sturdy
  • Fits 3 across
  • Heavy to move
Chepachet, RI
Verified Buyer
Perfect to Fit Three
May 21, 2019
We have three kids under 4 and we both drive 5 passenger vehicles. Love the easy install, ability to extend RF, and safety features of these seats. I have 5 of them.
Chepachet, RI
Verified Buyer
Love this seat
May 21, 2019
I already have two of these and needed another for the baby. Love the color and the fabric on top of all the safety features that sold me the first time!
Chepachet, RI
Verified Buyer
Perfect Fit
May 21, 2019
When I was researching convertible car seats I was looking for safe, lasting, and able to fit three across. I narrowed it down to three seats and ultimately choice these and am so glad I did.
Verified Buyer
Great car seat
May 20, 2019
Love this car seat. Easy to install. My 3 year old is still rear facing and doesn’t complain about comfort. Great when you need narrow seats. Only con is it’s really heavy so wouldn’t recommend if you have to move the seat often.
Vienna, Virginia
Verified Buyer
Favorite Car Seat
April 26, 2019
I work in car safety research so besides a safe car I am always on the lookout for the safest car seat. This seat has really great reviews from people as well as the industry. We do not have the biggest car so this seat is great if you need to fit three across or if you need to keep two seats side by side so that one more adult can fit in the back. My son looks comfortable in the seat as well. Albee Baby has the best price on this seat and the rewards program is the best. Highly recommend!
  • Slim design and safe
Best Uses
  • This car seat can fit three across
Eden Prairie, MN
Verified Buyer
Great compact car seat
April 24, 2019
Our friends had recommended trying these so we could get three car seats across in a small car. These fit perfectly and it’s pretty easy for our almost 3 year old twins to get in and out of. Plus, the product was cheaper here compare to competitors. Would definitely recommend, especially if you are looking for car seats for a more compact car!
  • Fits in compact car, easy to buckle in
Midland, Michigan
Verified Buyer
Love these seats & so do our girls!
March 31, 2019
We love the Diono Radian RXT! We purchased due to its slimness and needing 3 seats across. The material is soft and comfy, the seats are super strong and durable feeling and they’re really easy for our girls to climb in and out of. Our girls prefer these over their previous Graco.
  • Comfort. Design. Durability. Strength.
Best Uses
  • 3 across.
Verified Buyer
Obsessed doesn’t even cover it
March 23, 2019
I’ve been buying Dionos ever since my oldest (now five) has been two and I can’t imagine our lives without them. They’re incredibly sturdy, safe and within a decent price point as far as car seats are concerned;I love that they’re slim enough that I can fit three across in my suv or in my husband’s smaller car if need be.
  • Safe
  • Compact
  • Price
  • Durable
  • Easy Install
  • Heavy
Schertz, Texas
Verified Buyer
Liked it so much, we bought two!
March 15, 2019
This is a very versatile, very comfortable car seat. Our 4 year old still uses his and we bought another for our 7 month old because he's growing out of his smaller seat. The removable infant cushions are a great fit for him. Straps are comfortable with a very soft padded cover on the harness. The only downside is that it is quite heavy to carry, but we only do that when we travel by air. The heavy steel frame does mean great safety, though. Highly recommend!
  • Versatile
  • High strength steel frame
  • Comfortable
  • Heavy
Delaware, Ohio
Verified Buyer
Love this seat!
March 14, 2019
We absolutely love this seat! It is sturdy and safe for our son and perfect for the backseat of my pickup truck. We are due with baby #2 any day now and the slim design of this seat will allow the baby carrier to fit nicely next to it and eventually another Diono!
Jann E.
Three across, Best for the Money
March 2, 2019
We drive a Ford Focus which is, in my opinion, only a medium sized car. The choice was between buying a new car or two Dionos when we had our third child because there was NO WAY we were getting a third seat in with our daughters previous booster. Although Dionos may be one of the more expensive car seats out there, they certainly are cheaper than a new car! We still are able to use our original infant carrier with the two dionos but I like these so much I will likely be purchasing a third eventually. They’re solidly made and have the most room to grow I’ve found, especially for rear-facing, and I’ve done a lot of research. I like the side impact head rests as most children are killed or injured in side impacts, and also they make sleeping easier for the child as their head won’t rock forward as easily. Best bang for your buck and cheaper than Amazon even on this site!!
  • Narrow and large age range, able to rear face for very long. Fits three across, best quality you can buy
Best Uses
  • Families with more than two children (or are planning on more than two eventually) or anyone who cares about buying the best safety for their child due to the high quality and rear-facing abilities.
  • Heavy, top heavy/tips over (when free standing), some people with larger hands may have more difficulty with the install
Marysville, IN
Verified Buyer
Great seat
February 27, 2019
I never used these for rear-facing, but for forward facing they lasted quite a while even for my tall boys. We kept these in Grandma's car so they were not used daily, but they were easy for my boys to Buckle in and out and I felt they were very safe in these. Plus the colors are great!
ephrata, Pennsylvania
Verified Buyer
Love the size
February 25, 2019
We loved the size of this seat for our car. Easy install as well.
Customer Q&A