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Diono Radian 3R, 3-in-1 Convertible Car Seat, Rear Facing & Forward Facing, 10 Years 1 Car Seat, Slim Fit 3 Across, Gray Slate

  • Based on 6,393 reviews
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Availability: In Stock.
Fulfilled by GOMINIGO / GMG Motorsports

Arrives May 21 – May 22
Order within 17 hours and 51 minutes
Available payment plans shown during checkout

Color: Gray Slate


Style: Radian 3R Fits 3 Across


Pattern Name: Car Seat


Features

  • 10 Years One Car Seat - from Birth to Booster (5 - 120 lb) it's all you will need. Grows with your child, ultimate protection on every road trip. 4 modes in 1 seat!
  • Rear Facing for Longer - lovingly engineered to keep your child rear-facing up to 50 lb.
  • Fits 3-Across - our famous slim-fit design 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.
  • High-quality ComfortPlus Memory Foam, always included.

Description

The Diono Radian 3R is the original slim-fit 3 across All-in-One convertible car seat, designed to protect from baby to booster seat (5 - 120 lb). Lovingly engineered with the famous Diono steel reinforced frame and now rear facing for even longer, expect 10 years of safety from just one car seat. Designed and engineered with complete rear facing protection, so you can keep them in a safe rear facing convertible car seat for longer up to 50 lb. Built with a mechanically engineered, reinforced steel frame, made from automotive grade high strength steel, the radian is always ready to shield and protect. And when your family grows, the slim-fit design will fit 3 across in most vehicles without compromising child safety or passenger comfort. Our SuperLATCH system (UAS Compatible) makes installation easy and super secure. As travel car seat experts, Diono have naturally built in super portable and convenient features to the Radian 3R with original fold for easy transport and storage and easy remove machine washable covers. The radian is also aircraft certified (FAA approved), so you can take safety with you wherever you go.

Brand: Diono


Installation Type: Latch


Material: Polypropylene, Alloy Steel, Plastic, Polystyrene


Color: Gray Slate


Orientation: Convertible Seat


Product Dimensions: ‎16.1 x 16.9 x 28.4 inches


Item model number: ‎50625


Is Discontinued By Manufacturer: ‎No


Minimum weight recommendation: ‎5 Pounds


Maximum weight recommendation: ‎120 Pounds


Minimum height recommendation: ‎18.1 Inches


Maximum height recommendation: ‎57 Inches


Material Type: ‎Polypropylene, Alloy Steel, Plastic, Polystyrene


material_composition: ‎90% Polyester, 10% Spandex


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


Additional product features: ‎Fits 3 Across


Number Of Items: ‎1


Style: ‎Radian 3R Fits 3 Across


Number of reclining positions: ‎1


Batteries required: ‎No


Orientation: ‎Convertible Seat


Rear-facing minimum child weight: ‎5 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: ‎23.4 pounds


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: May 21 – May 22

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.

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Top Amazon Reviews


  • Quality, heavy, narrow, kid likes it
Color: Black Jet Style: Radian 3R Fits 3 Across Pattern Name: Car Seat
I flew two trips with this and another seat. It is heavy for flights, but I managed, also fairly quick and easy to install in a plane seat. If flying with it again I would devise a way to lock it folded up and to carry it as a backpack. Usually it is installed in a full size truck and I like how it looks and is easy to get in and out of for my 4 almost 5 yr old. Full metal frame and latch design is not cheap so has me convinced it's a good safe choice. The last seat I'll need to buy I think. ... show more
Reviewed in the United States on July 4, 2023 by Nic Rupert

  • 3 across in smaller car
Color: Pink Blossom Style: Radian 3R Fits 3 Across Pattern Name: Car Seat
There were 2 features I purchased this for. The narrow construction that allows for 3 carseats side by side. It took 2 of these and another narrow seat to fit forward facing in a Saturn ion. Second is the all in one. Won't need to buy another seat or booster. If used rear facing, these take up more room than other seats. They are tall, plus the angle make it difficult to fit in a small car with a tall person in the front seat. Would not work for an infant in my Ion. I also like that is very sturdy. There's lots of metal in the construction. Feels safer. The trade-off is that it's heavy. But that's not a concern unless moving it from car to car all the time. Have only used as a forward facing carseat so far. But I like all the options that it can be used for. There are less expensive seats, but having to buy a rear facing, then forward, then a booster ads up. May save money in the long run if starting with just this one all-in-one. On the other hand, the dedicated infant car seats that can detach are super handy for going into stores without unbuckling your baby. Something to consider. Overall, highly recommend this seat. ... show more
Reviewed in the United States on October 24, 2023 by J Engineer

  • Peeeeerfect, more than expected!
Color: Red Cherry Style: Radian 3R Fits 3 Across Pattern Name: Car Seat
These carseats are great for the price I previously had a 600$ cybex carseat for my toddler and this Diono beats it by far!! The material exceeded my expectations plus it was so easy to install al three of them! They are sturdy, lightweight and very comfortable!
Reviewed in the United States on August 9, 2023 by Alejandra Maldonado Alejandra Maldonado

  • Love
Color: Black Jet Style: Radian 3R Fits 3 Across Pattern Name: Car Seat
I purchased this car seat when I didn’t have much back seat space. I was able to fit this car seat into my car unlike a lot of other car seats. I appreciate that it saves on space but still seems quite durable. It does not come with cup holders like most car seats these days, however, I was able to purchase a separate cup holder attachment which has worked great. The seat is easy to install, and my child is much more comfortable in this seat as opposed to some other leading competitor seats. I wish I had bought this seats for both cars! ... show more
Reviewed in the United States on September 29, 2023 by Haley

  • Fab seats
Color: Black Jet Style: Radian 3R Fits 3 Across Pattern Name: Car Seat
Girls love them. Comfy and sturdy. They fit in our convertible mini with space between seats
Reviewed in the United States on November 30, 2023 by N. V. G.

  • Annoying Installation
Color: Black Jet Style: Radian 3R Fits 3 Across Pattern Name: Car Seat
I randomly decided to downsize from a three-row vehicle to a two-row vehicle, so I needed to find car seats that would fit 3 across comfortably. These car seats definitely work for that. The thing I didn’t like about them is the company’s attempt to save money by not providing any instructions in the box (3 new boxes and absolutely no instructions). There are picture instructions on the side of the car seats, but like most things, these car seats are a little different than other car seats, so more detailed instructions would’ve been appreciated-particularly for rear-facing installation. If they want to save money, maybe they should provide a QR code with links to instructions and videos. They didn’t so I was left trying to find instructions for my exact model. The belts that give you lax for anchoring are also really annoying. Broke a few nails in the process. ... show more
Reviewed in the United States on September 27, 2023 by mmbrown

  • Good seat **manual inside of seat cover near top**
Color: Gray Slate Style: Radian 3R Fits 3 Across Pattern Name: Car Seat
Pros: The seat seems good so far. Even though the footprint is more narrow (as compared to a Graco 3 in 1) it still seems plenty roomy for our 3 year old. Easy to install, ridged LATCH clips, can be folded up for easy transport, seat manual stows inside the seat (some people said it was missing but it is not) Cons: lots of separate parts, has added base and tether for rear facing, added seat padding (for something I don't remember), has an extra tether strap to reduce shock for child under 40lbs but need to remember to remove it when the child gets bigger, pads for straps are bulky and seem uncomfortable for child, tether/chest strap is very long ... show more
Reviewed in the United States on July 10, 2023 by CallMeColt CallMeColt

  • Wish I Bought These Sooner!!
Color: Pink Blossom Style: Radian 3R Fits 3 Across Pattern Name: Car Seat
I spent a solid week debating between the Graco Slimfit and the Diono - and I am SO GLAD I went with the Diono. We previously had the bulky Graco DLX4Evers, and my 5yo would constantly say her legs were uncomfortable, despite the seat being positioned correctly. Getting in and out was always a struggle too, due to how bulky they are. After needing to replace the Gracos, we switched out to the 3RX and my kiddos (3yo and 5yo) both LOVED them. They both said how comfortable they are, and my 5yo spent days saying how much more comfortable it was. Getting in and out is SO MUCH easier for them both, now that there's no bulk. No more hitting heads on the roof, either. Bonus! Instruction manual is tucked into a pocket under the seat cover, and despite a lot of reviews saying installation is hard, it's not that bad at all. Different to the Gracos? For sure! (But I am also only using forward-facing, which is pretty easy, I imagine rear-facing is more tedious). Safety rating is superior, it's FAA approved, and it folds up easily! I honestly wish I disc these sooner! Fantastic seat!! ... show more
Reviewed in the United States on June 1, 2023 by K R

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