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Diono

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

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Availability: In Stock.
Fulfilled by Amazon
Arrives Friday, Oct 23
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Style: Radian 3R Fits 3 Across


Color: Pink Blossom


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.
  • The original and only all-in-one convertible car seat that folds for travel or compact storage. FAA approved for airline use.

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.

Maximum Weight Recommendation: 120 pounds


Minimum Height Recommendation: 18.1 inches


Minimum Weight Recommendation: 5 pounds


Maximum Height Recommended: 57 inches


Rear Facing Maximum Weight: 50 pounds


Forward Facing Maximum Weight: 120 pounds


Rear Facing Minimum Weight: 5 pounds


Forward Facing Minimum Weight: 26.5 pounds


Forward Facing Car Seat Minimum Height: 29.9 inches


Rear Facing Car Seat Maximum Height: 44.1 inches


Installation Type: Latch


Orientation: Convertible Seat


Harness Type: 5-Point


Number of Height Positions: 1


Brand: Diono


Age Range Description: Newborn


Infant Toddler Car Seat Type: Convertible Car Seat


UPC: 677726506248


Global Trade Identification Number: 48


Manufacturer: Diono


Unit Count: 1 Count


Manufacturer Warranty Description: 12 months


Included Components: radian® 3R car seat, detachable rear-facing base, foam harness pads, lap belt cushion, rear-facing top tether, Instruction manual


Item Type Name: All-in-One


Model Number: 50624


Part Number: 50624


Item Dimensions D x W x H: 16.1"D x 16.9"W x 28.4"H


Item Weight: 23.4 pounds


Material Type: Alloy Steel, Plastic, Polypropylene, Polystyrene


Color: Pink Blossom


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Oct 23

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.

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Similar Products

Top Amazon Reviews

    • Fits in the Scion XB
Style: Radian 3R Fits 3 Across Color: Black Jet
We have a 2007 scion XB & we tried the diono seats in hopes of holding off buying a brand new car before our 3rd baby arrived. We were able to install 2 diono’s along with our chicco keyfit carseat perfectly in the back seat! Our 4 yr old, 2 yr old (both forward facing) and our new baby will fit perfectly and comfortably in the scion. However, they only fit nicely in forward facing mode because when they are rear facing, the headrest is really tall & the recline is pretty steep, so it definitely would’ve been touching the back seat of the driver or passenger. You can feel the heaviness and durability in these seats compared to the evenflo & graco seats we had, but that’s what also helps me feel secure knowing the kids are safe. My husband is happy that we get to keep the scion for a little while longer! Team no minivan! ... show more
Reviewed in the United States on June 2, 2026 by Musician
    • Quality and Safe Seats at a great value
Style: Radian 3R Fits 3 Across Color: Black Jet
I love that I can stick these side by side in my 4Runner. You can place them rear or forward facing. The seats grow with your child and are very adjustable. They are very safe, breathe well, and my kids are more comfortable in these on longer trips or when we are stuck in traffic. They are also easy to clean and durable. They are heavier but not hard to move around. I would double check the seat measurements if you are putting this in the rear of a small sedan vehicle. SUVs and pick up trucks should not have any issues. ... show more
Reviewed in the United States on September 20, 2026 by Mr. Bond
    • Bought 2 & would buy more
Style: Radian 3R Fits 3 Across Color: Black Jet
Super sleek, safe & sturdy. It’s so easy to strap the kids in & adjust knowing they’re safe & secure. I love the strap pads that would 💯 prevent any necks getting slit in an accident. It’s easy to take in & out but it’s definitely not recommended as a grab & go car seat. It’s solid.. the steele frame makes it pretty heavy so as long as you aren’t puny, you’ll be fine. You might break a sweat, transporting it and putting it in another car, but would you rather than be safe or in a cheap inexpensive Walmart car seat with straps that constantly twist. Super comfortable, apparently. My son usually falls asleep before we even get out of town. I bought one for my mom’s car and my husbands mom’s car. We have a different Dion model in ours but this one is easier to use honestly.. ... show more
Reviewed in the United States on December 30, 2025 by Rebecca
    • Don't hesitate!!!
Style: Radian 3R Fits 3 Across Color: Pink Blossom
Review Image by Vett Garcia
I switched from Graco to this one once my child moved to forward facing, but that wasn't my plan. I initially bought this as my airport/travel chair, but when it arrived and I felt how heavy it was, that was out but I decided to not return it and I'm so glad I didn't. My child is long and I felt she looked cramped in Graco. So when I changed her position, I took the Diono to the fire department to install (if you don't know, they do this for free) and they said that Diono was the creme de la creme, the best in safety. They said the weight adds value. They installed it SO TIGHT, that I feel soooo secure in the event of an accident that the baby will be alright. They said it's a bit difficult to install, but it was worth the work. It is the last seat I'll buy bc it lasts until 120lbs. It's slim in the car. I'm so pleased and the color is cute!! ... show more
Reviewed in the United States on August 7, 2024 by Vett Garcia
    • Husband loves it and our 3 kids fit!
Style: Radian 3R Fits 3 Across Color: Black Jet
We have a small suv with 3 small children & their bulk car seats did not fit! We did not want to buy a bigger car so my husband asked to buy this one and it is so great! I love the look of it , and it fits in his Tacoma with 2 other car seats! It is easy to install and remove in both cars. It might not be as comfortable as other car seats for toddlers, but my 3 year old doesn’t mind it. Definitely a great purchase ... show more
Reviewed in the United States on January 26, 2026 by Leslie Verduzco
    • A bit niche, but exactly what I needed.
Style: Radian 3R Fits 3 Across Color: Gray Slate
So, as a former CPST, I have a love/hate relationship with the Diono Radian (and its precursor, the Sunshine Kids version). It's a fantastic narrow, low profile seat that fits in seating situations that other seats can't. It's also the most uniquely difficult car seat I have ever worked with. The Radian has multiple 'rules' and 'modes' that must be switched based on the direction the seat is facing and the weight of the child riding in it, making it easy to misuse and impractical for any situation where you have to move the seat or reconfigure it often. However, knowing this, I diligently read the manual, tested everything out, configured it properly for my son (5 years old, 36 lbs, 42"). He is using the second harness slots from the top so he has room to grow. Installing it in the car was another trick. Of the three rear seating positions in our car, two have removable headrests and one has a fixed, forward head rest (the center seat). The Radian can be securely installed in either of the outboard positions, but it can only be used RF in the center seat because the fixed forward head rest does not allow the car seat to sit flush against the vehicle seat back. This was somewhat frustrating, because due to its narrowness it is an ideal seat to use in the center position, so I was a little bummed. However, it is now installed outboard for my son and is so low profile that my daycare kiddo has no problem climbing over him to get to his booster in the pick up line at school. Overall, this can be a difficult seat to use. 10000% recommend meeting with a certified Child Passenger Safety Technician if you purchase this one, just to make sure you're using it properly given some of its unique features. But as far as quality and ability to use next to other seats, it's great. ... show more
Reviewed in the United States on November 14, 2024 by Goofy Family
    • Love the red
Style: Radian 3R Fits 3 Across Color: Red Cherry
Review Image by Sara G
Review Image by Sara G
Review Image by Sara G
I like to think I have a cool car and wanted a car seat that was safe, red and less bulky for my tall 4 year old. This exceeded my expectations. Hubby said it was a little complicated to install but it’s heavy, made of steel and my son loves it.
Reviewed in the United States on August 15, 2026 by Sara G
    • Heavy duty car seat
Style: Radian 3R Fits 3 Across Color: Black Jet
I like it. Heavy. Feels high quality. It can be a little bit difficult to install but not undoable if you read the instructions. It’s slick and looks great. Safety ratings are reason for purchase. Drive Volvo xc70 200&
Reviewed in the United States on August 10, 2026 by Danielle DeCant

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