Search  for anything...

Diono Radian 3RXT SafePlus, 4-in-1 Convertible Car Seat, Rear and Forward Facing, SafePlus Engineering, 3 Stage -Infant Protection, 10 Years 1 Car Seat, Slim Fit 3 Across, Purple Plum

  • Based on 2,530 reviews
Condition: New
Checking for product changes
$349.99 Why this price?

Buy Now, Pay Later


As low as / mo
  • – Up to 36-month term with PayTomorrow
  • – 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, 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 6
Order within 7 hours and 39 minutes
Available payment plans shown during checkout

Style: 3RXT SafePlus


Color: Purple Plum


Features

  • 15 UPGRADES FROM RADIAN 3RXT - Includes SafePlus easy adjust 12-position headrest, 6 layers of SafePlus Side Impact Protection and SafePlus testing
  • COMPLETE REAR-FACING PROTECTION - SafePlus steel anti-rebound bar reduces rebound rotation by up to 50% for extended rear-facing travel up to 50 lb
  • SAFEPLUS ENGINEERING - Features a unique combination of engineering features and testing to the highest safety standards to ensure we have the safest seat possible
  • 10 YEARS ONE CAR SEAT - From rear-facing to forward facing Radian 3RXT SafePlus adapts as your child grows from birth to booster. Suitable from 4 - 120 lb / 1.8 - 54 kg
  • THE ORIGINAL RADIAN 3 ACROSS - Built with our famous Radian slim fit convertible design for a 3-across option only with Diono Radian combinations without compromising child or passenger comfort. Feel safe having your children secure in the backseat

Description

The original 3 across All-in-One Car Seat just got better. Upgraded with 15 improvements from the award-winning Radian 3RXT, the Diono Radian 3RXT SafePlus features Diono SafePlus engineering, SafePlus anti-rebound panel and advanced SafePlus Side Impact Protection for complete protection from birth to booster 4 - 120 lb / 1.8 - 54 kg. From babys first journey the Radian 3RXT SafePlus provides complete rear-facing protection with a SafePlus newborn travel high wedge and SafePlus 2-in-1 infant positioning liner for a custom fit from 4 lb / 1.8 kg. As your child grows the SafePlus steel anti-rebound bar increases stability and reduces rebound rotation by up to 50%, so you can keep them in a safe rear-facing convertible car seat for longer (up to 50 lb / 22.7 kg). As both a rear and forward-facing convertible car seat, the Radian 3RXT SafePlus protects as they grow, with SafePlus easy adjust 12 position headrest that offers a 22% increase in occupancy range from the Radian 3RXT. As they grow the Radian 3RXT SafePlus provides 6 layers of SafePlus Side Impact Protection without compromising the famous Radian 3-across slim fit in most midsize vehicles. All these great features have been combined with SafePlus engineering, with the Radian 3RXT SafePlus All-in-One Convertible Car Seat subjected to a combination of the most rigorous crash tests to ensure the safest seat possible. Parents can also expect the travel friendly traits Diono is famous for, including convenient fold and FAA approval for use on an aircraft. So, no matter where you go you can take Diono safety with you.


Brand: Diono


Installation Type: Latch


Material: Alloy Steel, Polypropylene, Plastic, Polystyrene


Color: Purple Plum


Orientation: Convertible Seat


Product Dimensions: ‎16 x 17 x 28.5 inches


Item model number: ‎50105


Minimum weight recommendation: ‎4 Pounds


Maximum weight recommendation: ‎120 Pounds


Minimum height recommendation: ‎18.1 Inches


Maximum height recommendation: ‎57.1 Inches


Material Type: ‎Alloy Steel, Polypropylene, Plastic, Polystyrene


material_composition: ‎100% Polyester


Care instructions: ‎Covers Machine wash cold and line dry. Shell and Components Spot clean


Additional product features: ‎Fits 3 Across


Style: ‎3RXT SafePlus


Number of reclining positions: ‎12


Batteries required: ‎No


Orientation: ‎Convertible Seat


Rear-facing minimum child weight: ‎4 Pounds


Rear-facing maximum child weight: ‎50 Pounds


Forward-facing minimum child weight: ‎22 Pounds


Forward-facing maximum child weight: ‎120 Pounds


Harness type: ‎5-Point


Item Weight: ‎30.6 pounds


Country/Region of origin: ‎China


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, May 6

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

Learn more about financing & leasing here.

Top Amazon Reviews


  • 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

  • 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
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 narrow car seat
I bought this for my equinox. I’m needing to fit a infant carrier, toddler seat and backless booster in the back of my Chevy. This seat is a great narrow car seat
Reviewed in the United States 🇺🇸 on November 20, 2022 by Cassandra

  • Huge
Style: 3RXT Color: Gray Slate
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

  • Nice sturdy carseat
So getting this carseat started was a challenge. We thought the instructions did not come with it, but then found by searching online it is located inside the fabric where there is a location for it to be stored all the time. We also bought the extra angler piece to help with the rear facing. We have a 2017 Subaru Outback and installed it in the middle seat rear facing. My husband is 6" and I am 5'3". We both can fit in either seat in the front and be comfortable. This is with the angler adjuster. Without that we probably wouldn't be comfortable. The cushions on the straps were a nuisance. My husband ended up turning it so the flaps with the velcro wouldn't be in our daughters face. Leaving it the way it was when it came it was very bulky and digging into our daughters neck if the top buckle was at chest level. It is a little tough to tighten than my slimfit. We like the feature of the strap that goes on the tracks of the front seats to prevent the head of the carseat from moving too much. The cup holder is okay. My daughter can get her drinks in and out easily. I think my daughter thinks it is comfortable as she has fallen asleep in it a few times. It is easier getting my daughter in and out of than the slimfit. My husband also found it annoying that you have to remove stuff in order to adjust the height of the straps. You have to rethread it at the appropriate height of your child. This carseat is definitely one to install once and leave it be though. Comparing it to our infant grace extend2fit and grace slimfit I definitely like this one better to transition out of infant carseat. It gives us more room up front to be comfortable than the other two carseats installed rear facing. ... show more
Reviewed in the United States 🇺🇸 on January 14, 2021 by Sarah

  • Received 17mo old seat
I am very disappointed. I received a seat that is already 17 months old.
Reviewed in the United States 🇺🇸 on January 7, 2023 by AW AW

  • Best option for fitting three seats in a row
Style: 3RXT Color: Black Jet
For reference I have a 2020 Equinox and I have 2 of these Diono Radian 3RXT carseats forward facing as well as a Britax convertible car seat rear facing. They all fit! I purchased the Diono seats because I needed three seats to fit in my vehicle. I have owned many car seats, ranging from infant carriers to convertible seats to booster seats. Honestly, this was the most difficult to install. Just too many extra steps, like having to unscrew a compartment to remove the five point harness to use in booster mode. The headreast isn’t very easy to adjust. Also, this seat does not come with a manual. That is bizarre, in my opinion. I was able to easily find it on my phone in a google search but it just annoyed me to have to sit there scrolling on my phone and expanding the screen everytime I wanted to read the directions. I didn’t find the seat to be heavy, as some said in other reviews. It’s a much slimmer seat so for me it was easier to carry out to the car. My children said the seat was comfortable. I have one seat in full booster mode and one seat using the five point harness. The straps are a little uncomfortable on the neck but not terrible. Overall, if you need slimmer seats that will protect your little ones from infant and up this is your best option. That is why I purchased these seats. However, I would like to see the company improve some things that we already see with other manufacturers. ... show more
Reviewed in the United States 🇺🇸 on May 14, 2021 by CR

Can't find a product?

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