Search  for anything...
Diono

Diono Radian 3RXT Special Edition Slim Fit 3 Across All-in-One Convertible Car Seat, Rear-Facing, Forward-Facing & High-Back Booster, Gray Oyster

    • Based on 2,931 reviews
Condition: New
Checking for product changes
$254.99 Why this price?
Save $145.00 was $399.99

Buy Now, Pay Later

As low as $42.50 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Monday, May 20
Order within 18 hours and 55 minutes
Available payment plans shown during checkout

Recently Viewed

Style: 3RXT Special Edition


Color: Gray Oyster


Features

  • Car seat converts from infant to booster seat, rear, and forward-facing modes to adapt as your child grows for 10 years of use; One-handed easy-adjust, 12-position headrest for a comfortable fit
  • High-quality polyester is used to create exclusive fabrics with timeless shapes and earthy tones
  • Designed for safe rear-facing travel from 5 to 50 pounds, forward-facing with a 5-point harness up to 65 pounds, and high-back booster mode up to 120 pounds
  • Ensures durability thanks to the reinforced steel frame made from automotive-grade high-strength steel; Equipped with an infant travel high wedge for extra protection
  • Built with slim fit convertible design for a 3-across option in most vehicles; Overall dimensions (D x W x H): 16 x 17 x 28.5 inches; Folded dimensions (D x W x H): 7.1 x 17 x 28.5 inches

Description

The Diono Radian 3RXT is the original slim-fit 3 across all-in-one convertible car seat to protect your child from baby to booster seat. Engineered with a steel reinforced frame, you can expect 10 years of safety from this car seat. The convertible car seat provides safe and comfortable baby positioning thanks to the 2-in-1 infant liner with integrated newborn baby travel high wedge which helps reduce head slump to keep airways open. As your baby grows, simply remove the wedge to allow the liner to give extra comfort and support. Designed and engineered with complete rear-facing protection, this car seat is suitable for up to 50 pounds. Transition from rear-facing to forward-facing using the adjustable, 12-position headrest and rest easy knowing the SuperLATCH system is super easy to install. The slim-fit design will fit 3 across most vehicles without compromising child safety or passenger comfort and the steel-reinforced cup holder stores essential road trip drinks and snacks. The Radian is also aircraft certified (FAA approved), so you can take safety with you wherever you go. Have the peace of mind you deserve when you travel with the Diono Radian 3RXT Car Seat.


Brand: Diono


Installation Type: Latch


Color: Gray Oyster


Orientation: Forward Facing


Product Dimensions: 16"D x 17"W x 28.5"H


Product Dimensions: ‎16 x 17 x 28.5 inches


Minimum weight recommendation: ‎5 Pounds


Maximum weight recommendation: ‎65 Pounds, 120 Pounds, 50 Pounds


Maximum height recommendation: ‎28.5 Inches


Style: ‎3RXT Special Edition


Orientation: ‎Forward Facing


Rear-facing minimum child weight: ‎5 Pounds


Harness type: ‎5-Point


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, May 20

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • PayTomorrow Financing
  • Apple Pay Later
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • It’s huge !
Style: 3RXT SafePlus Color: Gray Slate
This car seat is huge but love this brand. It is pricey so recommend catching it on sale. This is for my one month old but my 2 year old also sits in the same seat. I have 2 car seats and a booster seat and they all fit next to each other in the back seat. We have a Chevy mailbu and a Traverse for reference. It’s so safe and easy to clean. It’s my favorite car seat and won’t turn back ! ... show more
Reviewed in the United States on July 17, 2023 by Tiffany Scott
    • Does not fit rear-facing
Style: 3RXT SafePlus Color: Black Jet
Review Image by Steven Fruh Steven Fruh
Review Image by Steven Fruh Steven Fruh
Review Image by Steven Fruh Steven Fruh
I have a 2013 Ford Explorer and need a 3 across rear facing car seat. We love these to fit 3 across but this does not fit rear facing! My driver seat is ALL the way forward and it’s still touching the back of the seat. I am also using the rear facing angle adjuster. I’ve moved it to my husband’s F-250 and it will has a couple inches of clearance. Not made for mid size SUVs rear facing! ... show more
Reviewed in the United States on June 21, 2023 by Steven Fruh Steven Fruh
    • It’s perfect
Style: 3RXT Color: Black Jet
It was exactly as I expected.
Reviewed in the United States on August 6, 2023 by Carol Brush
    • I want to love this like my RTX, but they went cheap for cover, that's what's new in 2020 for 3RTX
Style: 3RXT Color: Black Jet
Review Image by Kay Kay
Review Image by Kay Kay
Review Image by Kay Kay
Review Image by Kay Kay
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 ... show more
Reviewed in the United States on March 8, 2020 by Kay Kay
    • Great car seats!
Style: 3RXT Color: Black Jet
Great car seat for a smaller car! Safety is great as well:)) My grandkids are very comfortable in these seats!
Reviewed in the United States on June 23, 2023 by Kim Beaver
    • One of the best purchases we’ve made for our toddler!
Style: 3RXT SafePlus Color: Blue Sky
One of the best, sturdiest, safest car seats out on the market right now. Toddler is super comfortable in it and has ability to grow with it. Worth the investment 100%, very high quality! Love Diono Products!
Reviewed in the United States on May 29, 2023 by Amazon Customer
    • Safe but very uncomfortable
Style: 3RXT Color: Black Jet
This is the third Diono seat we own and the fourth car seat we own (I am the father of 3 young children; the other seat is a Graco). I trust that this product would protect my child in a crash, and that's certainly the most important aspect of a car seat. But, we have three issues with this seat: 1. Hard to install. 2. Difficult to loosen the straps. 3. Uncomfortable for my children. 1. Hard to Install: I routinely switch all of our seats between two cars four times per year to accommodate our school and vacation schedules. This car seat, like many, is a serious pain the backside to install and it's only safe if installed correctly. 2. Difficult to loosen: In the front is a small lever that you must lift to release the straps and make them loose enough to release the child. On our other two Diono seats, this lever is about 1/2 inch wide and lifts easily. On this model, the lever is only about 1/8 inch wide and hurts the fingers to release it. 3. It's uncomfortable for my child. The top holes for the shoulder straps are too close together and pinch the neck of the child. My other two Diono seats do not have this issue. To explain, the shoulder straps connect at the crotch with buckles, and then pass over the shoulders, through holes in the seat, and pass through to the pull strap in the front at the bottom. This is a common design with car seats that allows them to be easily tightened by pulling on the strap. On this model of Diono seat, the holes at the top where the straps pass through are too close together. When the straps are tightened, even slightly, they severely pinch the neck. Unlike the other three seats I own, my children immediately commented that their neck hurt. I could visibly see that the strap was digging into their neck on either side, pressing firmly on the carotid artery. It was so extreme that my wife and I were concerned it might restrict blood flow. We had no choice but to use the seat on this first short drive of about 15 minutes. When we arrived and unbuckled the seat, the child had an embossed red mark on either side of the neck. I stuffed some cloth around the neck on the way home and eventually purchased some extra padding for the straps. It's not ideal, but it will work for our circumstance. I cannot recommend this car seat to anyone. If the holes were spaced further apart, even as little as a half inch (a quarter inch on each side) it may alleviate this issue. But the holes are part of the structure of the seat and cannot (or should not) be altered. The other two Diono seats we own aren't any easier to install, but they are certainly more comfortable for the kids. If this is the type of experience that Diono will provide in future designs, I won't be recommending them. ... show more
Reviewed in the United States on June 30, 2021 by C. Wood
    • Huge
This car seat is giant. If you have a small vehicle (car, smaller SUV) and you have a passenger often, you might want reconsider if using this for rear-facing. I had to watch several videos before installing to figure out all the features and how to get it in properly. We use this read facing in a Honda Pilot and the passenger has just enough leg room. We also had to purchase the pad for under the seat so it would clear the head rest. I would install this car seat once and not move it for a long time, not good for moving between cars. ... show more
Reviewed in the United States on December 19, 2022 by Christie

Can't find a product?

Find it on Amazon first, then paste the link below.