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Item # 16012

Diono Radian RXT Convertible + Booster Car Seat - Sunburst

Share Diono Radian RXT Convertible + Booster Car Seat - Sunburst

Was $359.99
Save $130 36% Off

Other Options Available:

Coordinating Items
Diono Radian Carry Strap
Diono Car Seat Travel Bag
Include the Diono Radian RXT Convertible + Booster Car Seat - Sunburst

Item # 16012


Rear-facing Capacity: 5-45 lbs
Forward-facing Capacity: 20-120 lbs
Seat Weight: 26.15 lbs
Seat Dimensions:28.5 H x 17 W x 16 D

What's Included:

Cup holder

This product will:


Fit 3 Across

Fold for storage and travel

Machine wash and dry

Steel Frame

Full steel frame and aluminum reinforced sides for unmatched safety.

Fit 3 Across

Comfortably fits 3 across in most mid-size vehicles.

Fold & Go

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

FAA Certified

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.

18 Reviews
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100% Recommend this product (18 of 18 responses)
By Laurie
Claverack, NY
July 15, 2017
Love it!
I'm so glad we went with Diono! It's slim but oh so durable and supportive.
ConsHeavier then most but I understand why!
By yawei
san diego, CA
July 5, 2017
good qaulity
It has very good qaulity. The steel frame inside is very firm,and it is good for travel.
Prossteel frame
Consvery very very heavy.
By HelicopterMom
April 15, 2017
Great Price for Great Carseat
I am excited to put this seat to use. Found it to be one of the very few seats on the market for my LO with a steel frame. I feel that even with its weight it will be a great seat for her. Love the way it is able to grow with the child. Also love the colors. I feel like it would be easily visible in any accident. (Hoping to never have to find out.) I feel the price tag was just right considering the peace of mind it will give me.
ProsSteel Frame Nice fabric Well Built
ConsHeavier seat. Not an issue as it will not be leaving the vehicle once installed. May be a tight fit in my Explorer as a rear facing seat, however will wait for final install to see.
By Jenny
April 13, 2017
Our favorite seat!
Love this carseat! This is our 3rd Diono RXT for our vehicle and each set of grandparents has 1 in their car. Easy to install, easy to use. Love that we can fit all 3 across the van seat - they are sturdy and safe. We have used them RF and FF. Love that the weight limit is high and the expiration is much longer than other seats.
ProsGreat safety features Easy to install Easy to adjust Folds
ConsHeavy if you have to do a lot transferring between vehicles
Best UsesRearfacing Forward facing Booster
By Mandi
Kansas City
April 7, 2017
Great seat
Very narrow, easy to install.
By Erica
April 5, 2017
Great, sturdy car seat
I've used this car seat years ago with my first two children (back when it was Sunshine Kids), so with our new little one, I was excited to order the new Diono. It is exactly as I remembered it...sturdy and extremely well-made. I like the "slimness" of it, in that it does not take up too much room across the backseat, as I have two other children that regularly ride back there. I LOVE the orange color. It was relatively easy to configure & install, as these things go. My only negative is the overall weight of the seat. It is very heavy and cumbersome to heave in & out of the car (thankfully, we don't have to do this much), but I can imagine taking this on a plane would be challenging. Overall, we love this car seat and love that it should last for years, as the weight limit goes up to 120 lbs, and we can eventually use i as a booster. Highly recommend!
By Natalia Smith
Whitestone, NU
April 2, 2017
I can't say enough good things about this car seat! Not only does it fit 3 across in the backseat of my 2016 Ford Escape, but my kids get in and out happily! So sturdy, so slim, without sacrificing safety. So happy to have purchased this! Should have been the only seat I bought from the beginning but now I know!
By Kariada
Beaumont, TX
March 22, 2017
Great seat
Yes, it's a little heavy but it makes me feel like it's actually as sturdy as it claims. The buckles are pretty easy to work and the straps come with shoulder pads so I don't have to worry about them digging into baby's neck. Wouldn't be one I'd want to change back and forth between cars regularly but as a single vehicle seat both baby and I like it.
ProsSafe Fun color Padded straps
ConsHeavy Couldn't fit rear facing in a sedan
By Rebecca
Phoenix, AZ
March 22, 2017
Best car seat ever!
We love this car seat. We had one and bought a second. It's easy to install and the straps never twist. Both our kids like it and seem comfortable.
By Kelsey
Ayr, NE
March 18, 2017
Great carseat!!
I love this carseat and how my son fits in it!! It will last a very long time! The color is also great! Totally worth every penny!!
By Jamie R
Mesa, AZ
March 17, 2017
Great carseat
We love this car seat so much that we ordered a second for our other vehicle. The price is definitely worth it for piece of mind.
ProsFits 3 across in most vehicles. My two teenagers have plenty of room in the back seat with the car seat. My 2 year old is very comfortable.
Best UsesAny age.
By Tiffany
March 1, 2017
Hands down best car seat I have ever owned!!
This is the best car seat I have ever owned. Still have one I bought 6 years ago and it's as good as it was brand new. I have 5 kids in car seats and everyone of them Ride in a Diono RXT or Diono Radian.
ProsSize, durability, safety, ease of install, high weight limits.
ConsPrice (defiantly worth the money just hurts the pocket), heavy (also not really a con as that's what makes me feel it is safe).
By xiaojie li
February 4, 2017
Safe and good qaulity
Steel frame inside and soft outside. It's good quality
By AngelaHL
January 28, 2017
Excellent carseat
Great price on for this car seat. It is an investment up front, but will be the only carseat you need to buy for little one.
By Adam
January 28, 2017
Just what I was looking for
Was in search of a slim, safe, convertable seat for my one year old. This fit all my needs. Wasy to install and use. Comfortable for my child.
ProsSlim fit and ease of installation.
ConsHeavy to carry.
Best UsesSlim fit.
By becca
January 14, 2017
the perfect carseat
we had to buy a new carseat for my daughter. i love that it is all encompassing- rear facing, forward facing, booster, it does it all! very easy to set up and install. buckles easily. safe and secure. great color too. highly recommend. will buy another for our next kids
By Destinee
January 9, 2017
In love with this car seat. Bought one for my two year old. I will be buying one for my newborn and my 5 year old as well!!
ConsVery heavy
By Rhea
Columbus, OH
December 22, 2016
High Quality Seat/Highly Recommend
I chose this seat for these reasons: (1) replace car seats after an accident; (2) the size so that we could purchase a sedan over another gas hogging SUV with baby #3 on the way. I could not be more impressed with the following: (1) how fast Albee Ships; (2) the design of the seat is like no other, it is rock solid, the instructions are clear, and the installation videos on Diono's website were incredible. Please note this seat is definitely not for someone who does not want to take a lot of time to set up and install. I read the new car manual and the installation manual (more than once). This made my first attempt at install work seamlessly.
ProsQuality, design, safety features, size
ConsInstallation takes some self education so that you make sure you get it right.

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