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Diono Radian 3QX 4-in-1 Rear & Forward Facing Convertible Car Seat, Safe+ Engineering 3 Stage Infant Protection, 10 Years 1 Car Seat, Ultimate Protection, Slim Fit 3 Across, Black Jet

4.6 out of 5 stars 413 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in Convertible Child Safety Car Seats by Diono

List Price: $399.99 Details
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Color: Black Jet
Black Jet
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Enhance your purchase

Brand Diono
Installation Type Latch
Material Alloy Steel, Polypropylene, Plastic, Polystyrene
Color Black Jet
Orientation Convertible Seat

About this item

  • THE NEXT GENERATION 4-IN-1 RADIAN CONVERTIBLE CAR SEAT: Introducing 23 improvements in safety and new features from the award-winning 3QX slimfit convertible car seat.
  • 3-in-1 NEWBORN PROTECTION FROM 4 lbs: Provides the perfect lie flat travel position, adjustable harness and anti-slip harness pads complete with Safe+ steel anti-rebound bar to reduce rebound rotation by 50%. Security 3 different ways - rear-facing, forward-facing, and booster mode
  • SAFE+ 12 POSITION HEADREST: Easy one hand adjust 22% increase in headrest occupancy, comfort and protection
  • SAFE+ ENGINEERING: Radian 3QX is subjected to a combination of the most rigorous crash tests to ensure we have the safest car seat possible. The radian 3QX features high density plastic and steel reinforcement to create the ultimate protection.
  • 10 YEARS ONE CAR SEAT: With 4 ways to travel safely from birth to booster, the radian 3QX adapts as your child grows to offer a custom adjustable fit from birth to 120 lbs.
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Frequently bought together

  • Diono Radian 3QX 4-in-1 Rear & Forward Facing Convertible Car Seat, Safe+ Engineering 3 Stage Infant Protection, 10 Years 1 C
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  • Diono Angle Adjuster Car Seat Leveler, Wedge Cushion, Provides More Legroom for Rear-Facing, Gray, 14.9 x 12.9 x 1.9
  • +
  • Diono Ultra Mat Pack Full Size Car Seat Protectors For Under Car Seat, Crash Tested With Premium Ultra Thick Padding For Dura
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From the manufacturer

Diono Radian 3QX all in one convertible car seat
Diono Radian 3QX 1- years one car seat - rear and forward facing
Diono Radian 3QX rear facing for longer and slim fit for 3 across
Radian 3QX Radian 3QXT Radian 3RXT
Radian 3QX Radian 3QXT Radian 3RXT
MRSP 369.99 US Dollars 399.99 US Dollars 329.99 US Dollars
Weight Limits (lbs) RF: 4-50 FF: 22-120 RF: 4-50 FF: 22-120 RF: 5-50 FF: 22-120
Safe+ engineering
Anti-rebound bar
Safe+ Side Impact 6 layers 8 layers 3 layers
Safe+ Newborn Insert
Safe+ SIM Pod

Compare with similar items


Diono Radian 3QX 4-in-1 Rear & Forward Facing Convertible Car Seat, Safe+ Engineering 3 Stage Infant Protection, 10 Years 1 Car Seat, Ultimate Protection, Slim Fit 3 Across, Black Jet
Diono Radian 3R, 3-in-1 Convertible Car Seat, Rear Facing & Forward Facing, 10 Years 1 Car Seat, Slim Fit 3 Across, Black Jet
Britax One4Life ClickTight All-In-One Car Seat – 10 Years of Use – Infant, Convertible, Booster – 5 to 120 Pounds, Spark Premium Soft Knit Fabric [Amazon Exclusive]
Diono Radian 3QXT 4-in-1 Rear and Forward Facing Convertible Car Seat, Safe Plus Engineering, 4 Stage Infant Protection, 10 Years 1 Car Seat, Slim Fit 3 Across, Gray Slate
Evenflo Gold Revolve360 Rotational All-in-One Convertible Car Seat (Sapphire Blue)
Customer Rating 4.6 out of 5 stars (413) 4.8 out of 5 stars (2742) 4.8 out of 5 stars (4000) 4.6 out of 5 stars (456) 4.8 out of 5 stars (502)
Price $349.00 $199.99 $364.99 $349.99 $379.99
Sold By CapitalKidz Amazon.com Amazon.com Amazon.com Amazon.com
Brand Name Diono Diono BRITAX Diono Evenflo
Color Black Jet Black Jet Spark Gray Slate Sapphire
Item Dimensions 16 x 17 x 28.5 inches 16 x 17 x 28.5 inches 20.5 x 19.5 x 25 inches 16 x 17 x 28.5 inches
Size 1 Count (Pack of 1) 1 Count (Pack of 1) 20.5x19.5x25 Inch (Pack of 1) 1 Count (Pack of 1) 1 Count (Pack of 1)

Product description

Color:Black Jet

The ultimate 3 across All-in-One car seat from birth to booster (4 - 120 lbs. / 1.8 - 54 kg). Featuring 3 stages of complete rear-facing protection and all new Diono Safe+ engineering to provide the next generation in car seat safety. From baby's first journey the radian 3QX provides complete protection, with Safe+ newborn travel high wedge, Safe+ 2-in-1 infant positioning liner and Safe+ Anti-slip harness pads for added comfort and safety. As your child grows the Safe+ steel anti-rebound bar increases stability and reduces rebound rotation by up to 50%, so you can keep them safely rear-facing for longer, up to 50 lbs. (approx. 4 years old). Engineered following the latest European research and technology in crash energy management, the radian 3QX features 6 layers of side impact protection. Interlocking EPS and EPP foam, high density plastic and steel reinforcement combine to create ultimate side impact protection, without compromising 3 across fit in most midsize vehicles. As they transition to forward-facing, the Safe+ easy adjust 12 position headrest is contoured to improve child head containment and provides a 22% increase in occupancy range from the radian R series. All of these great features have been combined with Safe+ engineering, with the 3QX subjected to a combination of the most rigorous crash tests; including side impacts and rollover test 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.

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Color:Black Jet

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Customer reviews

4.6 out of 5 stars
4.6 out of 5
413 global ratings

Top reviews from the United States

Reviewed in the United States on February 18, 2021
Color: Black JetVerified Purchase
31 people found this helpful
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Reviewed in the United States on September 18, 2020
Color: Purple PlumVerified Purchase
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5.0 out of 5 stars Safe & comfortable!
By EM on September 18, 2020
This car seat has a lot of fantastic features! I currently own a Radian 3RXT (which I also love), and this is basically an upgraded version. As with most parents, the top of my list is safety. This car seat has an anti-rebound bar that helps keep the seat more secure in a crash. I really wanted this feature for my rear-facing child because there is no place in my vehicle to tether a rear-facing car seat. The fabrics and colors are very pretty and soft, and I like that my child has extra padding on the seat bottom with the memory foam cushion. (My other 2 car seats of different brands do not have this extra cushion.) Diono has also improved the headrest on this car seat making it more easily adjustable. My daughter seems quite comfortable in her new car seat. I have not owned this seat for long yet, but so far am very happy with it.
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18 people found this helpful
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Reviewed in the United States on June 21, 2021
Color: Purple PlumVerified Purchase
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3.0 out of 5 stars Great pros, huge con
By alexis on June 21, 2021
This car seat is so beautiful and seems to be really comfortable for my baby. It was easy to install and doesn’t take up a huge amount of space so you can easily fit 3 across the seat. My biggest most extreme concern is the bar for rear facing that is the reinforcement bar. The idea seems amazing I love that added security for safety however I live in Arizona where it’s 116 degrees outside so when I went to strap my baby that bar was extremely hot, like it left a burn mark. Thank god it was me and not my babies foot because that would be a huge problem. I wrapped it with a receiving blanket but, my goodness why wasnt this a thought or concern upon manufacturing?
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12 people found this helpful
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Reviewed in the United States on January 3, 2021
Color: Red CherryVerified Purchase
8 people found this helpful
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Reviewed in the United States on December 17, 2020
Color: Blue SkyVerified Purchase
6 people found this helpful
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Top reviews from other countries

Eric chretien
5.0 out of 5 stars perfect
Reviewed in Canada on August 31, 2020
Color: Black JetVerified Purchase
Customer image
5.0 out of 5 stars perfect
Reviewed in Canada on August 31, 2020
Wow, aesthetically speaking this car seat if off the charts. My wife and I looked at several different brands over the last few months before transitioning our daughter to the next step. This convertible car seat doesn’t disappoint. Initially, we settled on the 3RXT. However, after committing to a little research, we found that the 3QX had additional safety features that we felt were essential to providing the best protection for our baby. The key features important to us were side-impact protection (6 layers…awesome) and keeping baby rear-facing as long as possible. Our previous infant car seat didn’t have an anti-rebound bar. We chose the 3QX over the 3RXT based on this additional feature. I now realize how important this option can be in preventing excess rebounding in a collision. Also, I assumed that all car seats were tested for roll overs. Again, thanks to my research I found out this was not the case. I’m glad Diono takes child safety seriously. It feels like there are doing a little more to protect my child. Finally, the steel frame was a deciding factor over the competition. Although I pray we won’t need it, I feel safer knowing we have a car seat made with steel frame protecting our child in a possible car crash.

The other key features we considered a bonus were a memory foam cushion for seated comfort. Although we don’t have three children, it’s nice to know we could fit three across in our car when needed. Read between the lines honey. I much prefer the adjustable headrest on the 3QX over the 3RXT. We love to travel, therefore this car seat is ideal because it offers a foldable seat pan and is airline certified. Also, I found out that most airlines won't charge for car seats. It just makes to sense to use our own car seat vs. a rental seat. These are all great features that sold us on the Radian 3QX.
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28 people found this helpful
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Jinny
4.0 out of 5 stars Rear-facing: feels comfortable and safe, but a few things could be improved for quality-of-life.
Reviewed in Canada on July 13, 2021
Color: Red CherryVerified Purchase
5 people found this helpful
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Jenny Ly
5.0 out of 5 stars Good Solid Car seat.
Reviewed in Canada on December 22, 2020
Color: Black JetVerified Purchase
3 people found this helpful
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Irina Maior
5.0 out of 5 stars Best car seat on the market!
Reviewed in Canada on September 17, 2020
Color: Black JetVerified Purchase
4 people found this helpful
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MKDF
5.0 out of 5 stars Great quality! Edit, seat started pulling after a very short time.
Reviewed in Canada on September 9, 2020
Color: Blue SkyVerified Purchase
2 people found this helpful
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