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Diono

Diono Radian 3R SafePlus, All-in-One Convertible Car Seat, Rear and Forward Facing, SafePlus Engineering, 10 Years 1 Car Seat, Slim Fit 3 Across, Black Jet

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Availability: Only 5 left in stock, order soon!
Fulfilled by Amazon
Arrives Thursday, Aug 28
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Style: Radian 3R SafePlus Fits 3 Across


Color: Black Jet


Features

  • 10 Years 1 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!
  • Rear-Facing for Longer - keep your child rear-facing (up to 50 lb) with SafePlus Engineering and high-strength steel anti-rebound bar.
  • 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 - reinforced automotive grade high-strength steel, our unique core shell shields and protects your child.
  • One Hand Easy-Adjust - 12-position headrest with 6 layers of enhanced, rigorously tested, side impact protection.
  • The Original and Only All-In-One Convertible Car Seat - folds for travel or compact storage and FAA approved for airline use.

Description

The Original 3-Across All-in-One Car Seat upgraded edition. All-in-One Car Seat just got better. Updated with 12 improvements from the original Radian 3R, the Diono Radian 3R SafePlus features Diono SafePlus engineering, SafePlus Easy-Adjust 12 Position Headrest and improved SafePlus Side Impact Protection for complete protection from birth to booster (now suitable from 4 - 120 lb.) Lovingly engineered with the improved SafePlus Steel-Core, and as both a rear and forward-facing convertible car seat, the Radian 3R SafePlus protects as they grow, with SafePlus Easy-Adjust 12 Position Headrest. The new and improved Radian 3R SafePlus features energy-absorbing Side Impact Protection and extended side walls to reduce the impact of side crashes, all without affecting our slim fit 3-Across design in most midsize vehicles. The Radian 3R SafePlus comes with Anti-Rebound Bar slots for optional Anti-Rebound Bar (sold seperately) for added rear-facing safety. Radian 3R SafePlus All-in-One Convertible Car Seat is subjected to a combination of the most rigorous crash tests to ensure the safest seat possible. In addition to our regular extensive crash testing, we test over and above - including roll-over and side-impact tests, to achieve results above and beyond the current Federal standards. Our Easy-Click SuperLATCH system (UAS Compatible) makes installation easy and super secure. Radian 3R SafePlus now comes with an XL Steel-Reinforced Cup Holder to keep drinks and snacks handy on the go, and as travel car seat experts, Diono has naturally built-in super portable and convenient features to the Radian 3R SafePlus with travel 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: Alloy Steel, Polypropylene, Plastic, Polystyrene


Color: Black Jet


Orientation: Convertible Seat


Product Dimensions: ‎16 x 17 x 28.5 inches


Item model number: ‎50630


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, dry flat. Shell and Components Spot clean


Number Of Items: ‎1


Style: ‎Radian 3R SafePlus Fits 3 Across


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: ‎29.3 pounds


Country/Region of origin: ‎China


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Aug 28

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

    • Perfect for multiple kids in a smaller vehicle
Easy to install, fits 3 across in our mid-size suv, very comfortable for long rides for our kids, a little on the heavy side but that comes with a durable car seat. Colors are what we ordered. Easy to clean. Easy to adjust straps.
Reviewed in the United States on May 26, 2025 by Mason
    • Diono Radian 3R - A Game-Changer in Car Seat Comfort and Safety!
The Diono Radian 3R 3-in-1 Convertible Car Seat has proven to be an absolute game-changer for our family, and my son absolutely loves it! The versatility of this car seat is outstanding – from rear-facing to forward-facing, it's designed to accommodate different stages of a child's growth. The 10-year lifespan is a fantastic feature, providing peace of mind knowing that it will last through various developmental milestones. My son finds the seat incredibly comfortable, and the plush padding adds an extra layer of coziness. The reinforced steel frame gives a sense of security, and the installation process was surprisingly straightforward, thanks to the clear instructions provided. What sets the Diono Radian 3R apart is its slim design, making it a perfect fit even in compact cars without compromising safety. The adjustable headrest and harness system ensure a snug and secure fit as my son continues to grow. As a parent, I appreciate the ease of cleaning – the fabric is removable and machine washable, a lifesaver for those inevitable spills and messes. If you're in search of a convertible car seat that prioritizes both comfort and safety, the Diono Radian 3R is an excellent choice. It has made our car journeys much more enjoyable for my son, and as a parent, I couldn't be happier with this purchase! 🚗👶🌟 #DionoRadian3R #ConvertibleCarSeat #SafetyFirst ... show more
Reviewed in the United States on January 23, 2024 by Dana Cecil
    • Very very sturdy and strong probably one of the best on the market
Style: Radian 3R SafePlus Fits 3 Across Color: Blue Razz Ice
Love the seats after having a car accident we decided to go for a much stronger and sturdier seat and this came in at top of the list they fold nice and flat for traveling on planes and things but just be prepared they are very very very heavy so would be hard to carry around a airport with child in arms also a little hard to instal but well worth it in the end love all the cool colors u can also choose from ... show more
Reviewed in the United States on March 27, 2025 by olivia robert
    • Fits 2 in a row with additional infant seat in Toyota Camry!
We bought 2 of these to fit in the backseat of our 2010 Toyota Camry. 1 rear facing, middle forward facing, next to infant (Uppababy Mesa) seat. Middle forward facing was the only way it would fit. Pro’s: slim, sturdy, easy for our kids to get into themselves, latch system is easy/works well. Good customer service from Diono. Our first one didn’t have the rear-facing piece in the box. Cons: * Very heavy! * Tall backside. Check your car seat manual whether a car seat is allowed to touch/rest against the front seat (if rear facing). Now having moved one to the middle back seat (forward facing) on our Honda Odyssey, it sits higher and blocks the rearview a bit. Wasn’t an issue in the Camry. No cupholders- fine, since that wouldn’t fit anyway. Not as much padding, so perhaps less comfortable, but both our kids are fine in them. Overal conclusion: great car seat if you have a tight back seat! ... show more
Reviewed in the United States on February 12, 2025 by Esther
    • Durable
Review Image by Loren Ventura Loren Ventura
My daughter is 42inches, 36lbs- 5 years old pictured here. We bought this car seat with the idea that i wanted a slim durable seat that my daughter could grow in to and have for a long period of time. Pros: • Narrow design, great for tight spaces • Comfortable without the need for extra padding • Minimalistic but feels very secure • Steel frame provides added safety Cons: • Quite heavy, not ideal for travel • Tall and wide when rear-facing, limits front seat adjustment (not pictured here) • Adjusting the shoulder height requires uninstalling the seat, which is inconvenient • Not versatile for use with multiple kids due to the need for frequent rethreading of the harness Overall, it’s a solid choice for safety and comfort but better suited for a dedicated setup rather than frequent switching or travel. ... show more
Reviewed in the United States on January 6, 2025 by Loren Ventura Loren Ventura
    • Great car seat!
Amazing quality! Easy to assemble super safe and easy to clean! I love this brand!
Reviewed in the United States on June 21, 2025 by Taylor Daughtry
    • Excellent safety features for a tall 7-year old boy. Almost the only model on the market that fits.
Style: Radian 3R SafePlus Fits 3 Across Color: Black Jet
I would give this 4.5 stars if I could. It is one of the only seats that will fit my tall 7-year old boy that has a multi-point harness. It also has enhanced support for the head and neck (again, one of the only such models on the market that will fit a tall 7-year old). I say 4.5 instead of 5 because at least in a Tesla Model Y, it is impossible to get this seat 100% tight and immobile. That's a bit annoying and different from the baby / toddler seat I had before. However, compared to the standard issue "booster seat" that my boy could legally use, I am convinced that this provides much better protection even with a bit of "wiggle." ... show more
Reviewed in the United States on May 27, 2025 by CAAmazoner
    • Amazing Carseat
The Diono Radian 3R car seat is a fantastic investment! It offers exceptional safety, comfort, and longevity. With its versatile design and easy installation, it grows with your child. Plus, the removable covers make cleanup a breeze. Highly recommend! It is kinda heavy to lug around so it’s best to not move it much. ... show more
Reviewed in the United States on January 17, 2025 by Claudio Frederique

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