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Your cart is empty.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.
Elizabeth Guillen
2025-08-23 14:20:36
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.
Mallery
2025-08-20 15:15:58
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.
kalob gregory
2025-08-11 15:35:03
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.
Brian Law
2025-05-31 12:41:37
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.
Taeh Macias
2025-05-19 10:24:17
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!
Laura
2025-05-17 16:21:07
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!
MICHAEL R.
2025-03-15 19:41:52
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.
Anny
2025-03-13 21:59:20
Es famoso por ser estrecho, pero al ponerlo viendo hacia atrás necesita mucho espacio de las piernas del copiloto para que quepa
April Joy R. Vargas
2025-03-01 11:20:45
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K
2025-02-24 18:01:47
Heavier than expected. Sturdy and made with quality materials, the seat it self is nicely padded and feels very comfortable. Nicely designed and the beautiful colour was a bonus. The seat I received has a manufacturing date of August 2021. I bought and received the seat in November 2022.Update:Car seat is quite large and it will not be angled correctly for a rear facing infant in certain vehicles. Also it may not fit in smaller compact vehicles when using rear facing. I recommend researching your vehicle and if it is compatible. But all in all it is a quality car seat and I find is easy to install/uninstall.
Thriceblessd
2025-01-10 16:12:55
Je cherchais un siege auto qu'on peut installer avec le système isofix et ce siège convient parfaitement ; mon fils aura 4 ans dans 2 jours et le siege convient depuis la naissance jusqu'a ces 12 ans ...J'ai eu du mal à comprendre son fonctionnement avec le mode d'emploi mais des que j'ai compris tout était clair.Il y a un porte gobelet et mon garçon adore , c'est l'essentiel
Sabrina
2024-12-25 14:21:58
I am a big fan of these car seats. I like how bulky they are, but how not bulky they are in the car. I know that that doesn’t make much sense lol but I feel like when I put my son in the car seat, he looks well protected (in that sense I mean bulky). They also fit in the backseat of the Tesla.
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