Search  for anything...
Diono

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, Black Jet

    • Based on 287 reviews
Condition: New
Checking for product changes
$259.99 Why this price?
Save $40.00 was $299.99

Buy Now, Pay Later

As low as $43.33 / 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, Afterpay, 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

90-day refund/replacement

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 Thursday, Mar 6
Order within 5 hours and 58 minutes
Available payment plans shown during checkout

Color: Black Jet


Features

  • 10 Years One Car Seat - from Birth to Booster (4 - 120 lb) it's all you will need. Grows with your child, ultimate protection on every road trip. 4 modes in 1 seat!
  • SafePlus Rear-Facing Engineering up to 50 lb. With 3 modes of newborn protection, our steel anti-rebound bar reduces rebound rotation by up to 50%.
  • Fits 3-Across - our famous slim-fit design with SafePlus 6-layer side impact protection with zero compromises to safety, space, or comfort.
  • Mechanically engineered from reinforced automotive grade high-strength steel, our unique core shell shields and protects your child.
  • One hand easy-adjust 12-position headrest, the SafePlus completes 6 layers of enhanced, rigorously tested, side impact protection.
  • The original and only all-in-one convertible car seat that folds for travel or compact storage. FAA approved for airline use.

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. 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. 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). 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: Black Jet


Orientation: Convertible Seat


Product Dimensions: ‎16 x 17 x 28.5 inches


Item model number: ‎50100


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


Number Of Items: ‎1


Style: ‎Radian 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: Thursday, Mar 6

Yes, absolutely! You may return this product for a full refund within 90 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
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Space saver! Toddler approved!
Color: Black Jet
Love the car seat! My husband and I have used the evenflo 360 revolve gold since my daughter turned 1. She’s 3 going on 4 and we have a baby boy now who will inherit her revolve 360 seat. We decided to look for a car seat that was easy for my toddler to get in on her own without having to carry her into the seat and a car seat that was a space saver. This one did the trick it’s so much leaner and easy to adjust the buckles. My daughter does it on her own compared to her old one. What I will say is I don’t move the car seat at all so weight wise I wouldn’t be able to comment but when installing it wasn’t super heavy but it felt super sturdy. My only complaint is the cup holder wish it was built in but I understand it’s detachable to save space but works well! My husband didn’t have any issues with installation of the car seat he said it was straight forward for forward facing. One last thing my daughter’s head doesn’t hang when asleep it’s very rare compared to her revolve 360 that would occur always. ... show more
Reviewed in the United States on January 26, 2025 by Elizabeth Guillen
    • Absolute Lifesaver
Color: Black Jet
The Diono Radian 3RXT 4-in-1 car seat is an absolute game-changer for parents. This car seat is a true gem, and it's no exaggeration to give it a 5-star rating. First and foremost, the safety features are top-notch, providing peace of mind that every parent craves. The 4-in-1 design means it grows with your child, saving you money and hassle in the long run. It's incredibly versatile, accommodating various stages of your child's growth. Installation is straightforward, and the slim design is perfect for fitting multiple car seats in the back. The fabric is easy to clean, which is a huge plus when dealing with little mess-makers. In short, the Diono Radian 3RXT 4-in-1 car seat is worth every penny. It's a reliable, durable, and versatile investment in your child's safety and comfort, making it a clear 5-star choice for any parent. ... show more
Reviewed in the United States on October 22, 2023 by Mallery
    • Best Car seat Ever
Color: Gray Slate
This car seat is so sturdy and I feel like my son is so safe in it. He loves it and doesn’t feel squished in it. It takes up very little room and someone can comfortably sit in the middle seat with him. Installation was very easy!
Reviewed in the United States on September 12, 2024 by Taeh Macias
    • Super secure
Color: Black Jet
Not easy to install, this Car seat is heavy. Easy to clean. Spica cast friendly. One cup holder.
Reviewed in the United States on November 2, 2024 by rociofigueroa
    • Love these seats!!
Color: Black Jet
Review Image by Laura Laura
These seats are really nice. I love that they are really safe and sturdy while also being compact. It is also nice to be able to put them side by side in the middle row safely. Huge bonus!
Reviewed in the United States on October 30, 2024 by Laura Laura
    • Extremely heavy, overly complicated and straps won't tighten properly on smaller children.
Color: Gray Slate
Purchased this because of the narrow width to use as a travel car-seat on a commercial airline and with a rental car. I would strongly recommend against buying this if you intend to travel with it. It is extremely heavy and nearly impossible to maneuver on board an airplane. It is supposed to be good for children from birth to age 10, but because the straps have to be made to fit bigger kids, they won't tighten properly on a small toddler. I took the cover off to wash it prior to use, and needed the have the instructional video playing over and over to understand all the steps to disassemble and reassemble the seat. Replaced it with a much simpler and lighter carseat for travel. ... show more
Reviewed in the United States on December 4, 2023 by Brian Law
    • Best car seat I have!
Color: Gray Slate
This is an amazing car seat. I was in an accident with a previous car seat that saved my two year old. It was a cheap one I got on sale so for the new one I wanted something with great reviews and that was known for its safety. I feel so much safer with her in this car seat. Installing is typical to others. Not too hard but you definitely want to read your manual and maybe watch an installation video. It fits great in the middle seat with plenty of room for two other passengers on each side. The seat is more narrow than others with adjustable sides. My daughter seems to be comfortable and I'm at ease knowing she's safe. The only thing I'd say about this car seat is it is HEAVY!! we traveled to the airport with it and carrying it around by itself was horrible. I recommend buying the separate carrying case if you do any sort of traveling. ... show more
Reviewed in the United States on December 2, 2024 by kalob gregory
    • Regret our purchase after install
Color: Blue Sky
Don't get me wrong this car seat looks amazing and out the box feels heavy, strong and protective. Its not until I had to install the seat I noticed how wobbly and unstable the car seat feels. The lack of a leveler indicator and never feeling like it was sturdy REAR FACING turned me off. It is easy to clean, travel with and put your kid into, but I cant recommend this too a friend. I like my Graco turn2me and Maxi Cosi Pria much more. Maybe I will fall in love with it when it time for forward facing. ... show more
Reviewed in the United States on September 26, 2024 by MICHAEL R.

Can't find a product?

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