SKU: 41259383799
britax radian

britax radian DIONO Radian 3 RXT All-in-One Convertible Car Seat (2020 Edition)

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Description

britax radian DIONO Radian 3 RXT All-in-One Convertible Car Seat (2020 Edition)The Diono radian 3RXT is the original 3 across All in One convertible car seat, trusted by over a million parents to protect their child from birth to booster (5 120 lbs 2. 3 54 kg). Lovingly engineered with the famous Diono steel core and now rear facing for even longer. Expect 10 years of safety from just one car seat! DIONO Radian 3 RXT All in One Convertible Car Seat 2020 Features: Rear facing for longer Now up to 50lbs 22. 7 kg Improved Fabrics

The Diono radian® 3RXT is the original 3 across All-in-One convertible car seat, trusted by over a million parents to protect their child from birth to booster (5-120 lbs / 2.3-54 kg). Lovingly engineered with the famous Diono steel core and now rear-facing for even longer. Expect 10 years of safety from just one car seat!

DIONO Radian 3 RXT All-in-One Convertible Car Seat 2020 Features:

Rear-facing for longer

Now up to 50lbs / 22.7 kg

Improved Fabrics

New and updated fabrics that are easy to remove and wash.

Positioning Liner

New 2-in-1 infant positioning liner that is removable as child grows

Newborn Wedge

Integrated newborn travel high wedge creates near lie-flat travel position

 

Car Seat Installation:


Product Specs:

Rear-facing
5-50 lbs / 2.3-22.7 kg

Forward-facing
22-65 lbs / 10-29.5 kg

Booster mode
40-120 lbs / 18-54 kg

Seated torso height
7.5-16.5″ / 19-42 cm

Overall maximum height
up to 57″ / 144.8 cm

Weight
26.4 lbs / 11.97 kg

Care and Maintenance:

Cover machine washable at 86F/30C/Cold

DIONO Radian® 3RXT All-in-One Convertible Car Seat (2020 Edition)

Product Manual

Tips and Tricks:

Installation Tips

  • read the manual the comes with your car seat
  • read the vehicle manual
  • find a certified child passenger safety instructor or technician to help you and check your installations

 

Airline Use:

  • unfold the Diono car seat before boarding the plane and ask the flight attendant for seat belt extenders
  • make sure to install the car seat next to the window so passengers can get by in case of an emergency
  • make sure to take the slack out of the seat belt extender before connecting to the airplane seatbelt

Rear Facing Installation:

  • first secure the detachable base and slide in the locking mechanism
  • adjust the harness to be the proper height for rear facing
  • adjust the head support to fit your child properly

Folding and Unfolding:

  • to unfold: lay the car seat down on a stable flat surface and undo the velcro strap, tuck it in behind the fabric and open seat until clicked and locked.
  • to fold: remove the red velcro strap from behind the fabric and loosen up the harness as much as possible so they are at the top of the car seat. release the lever at the bottom of the car seat and push seat inward - secure the top with the red velcro strap.

 

Right For Newborn:

  • whether you buy an infant only car seat or an all-in-one convertible car seat, both car seats have to meet the same standard
  • seats like the Diono all-in-one convertible car seats come with an infant cushion insert to properly fit your child in the harness
  • all-in-one convertibles are more economical - they have a lot of room for growth for your growing child

FAQ's:

can the radian 3RXT fit 3-across in my car?

Most likely, yes, as long as you have 51” (129.6cm) in the back row from vehicle armrest to armrest. It may be necessary to install all three using the vehicle seat belt system.

can the harness straps be cleaned?

Yes, we recommend using a damp cloth with a solution of water and baking soda to wipe the straps clean. They cannot be saturated in any liquid, or they will need to be replaced. Replacement harness straps can be purchased on our website.

can I use the radian 3RXT from birth?

Yes, the weight limits on all our convertible car seats starts at 5lbs. The newborn must also meet a length requirement where the top of their shoulders reaches the lowest harness slot on the seat.

are the harness pads and buckle pads required on my seat?

Yes, they are required while your child is sitting in forward-facing. They are optional but recommended while sitting in rear-facing. The center buckle pad is required at all times.

See Entire Diono Collection

See Related Article: Best Car Seats of 2022

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 41259383799

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4.1 ★★★★★
Based on 17 reviews
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Product Reviews
S
Verified Purchase
Steven Francis
Houston, US
★★★★★ 5
A PLACE FOR YOUR HEADSET
Size: Small Storage Area, Size: Small Storage Area
This holder is fantastic, if you have the steel series headset and extra batteries it's perfect you'll love it, but would like to see a white version as well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 23, 2026
A
Verified Purchase
Amazon Customer
Port Orchard, US
★★★★★ 2
Not quite right
Size: Small Storage Area
this is "as advertised" but a simple extra ridge of plastic would have made it perfect. the issue people are having with the arctis pro, the thing that makes you want a stand for it, is the base station is a little too light, you can push it when you go to use the knob's integrated button. Issue here is the fit of the base is loose enough, you can still push the base out of the back. So it looks nice, and gives you a place to put the headphones and some other desk clutter, but it doesn't REALLY solve the problem.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 13, 2026
N
Verified Purchase
Nick
Port Orchard, US
★★★★★ 3
3D Printed (Not Mentioned) and Base is Way Too Loose
Size: Small Storage Area, Size: Small Storage Area
I bought this to clean up my desk setup for my SteelSeries Nova Pro Wireless, and while it looks decent from a distance, there are two major issues that weren't clear from the product page. First, this is a 3D-printed product. Nowhere in the Amazon description or photos does it state that this is 3D printed. You can clearly see the layer lines and "stair-stepping" on the curves. While I don't mind 3D printing in general, for this price point, I expected a standard injection-molded plastic finish. The product page feels a bit misleading by omitting this detail. Second, the fit is very poor. The "integrated dock" for the GameDAC station doesn't actually lock into place. There is no snap or friction fit; it sits so loosely that you can slide the DAC out of the front or back with the single push of a finger. This makes it feel unstable, especially when you are trying to use the volume dial or swap out batteries. Bottom Line: It’s a nice idea and fits the aesthetic of the headset, but the execution feels like a prototype rather than a finished consumer product. If you're looking for a secure "lock-in" feel for your expensive base station, this isn't it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 12, 2026
A
Verified Purchase
Avery l.
Waukegan, US
★★★★★ 5
High quality stand
Style: Swivel Base, Color: Silver, Style: Swivel Base, Color: Silver
The mStand 360 is an amazing stand. I love how it is built from a single piece of aluminum and looks amazing on my desk. It fits my Macbook Pro 15" extremely well and raises it up to the height of my monitor easily. Not only does it help me improve my posture, but it also neatens up my desk significantly. I can easily fit an external keyboard under my Macbook when I am not using it, clearing up space. The hole in the back is also useful for bunching cables together that go directly into my Macbook, keeping my cables off the floor when I take my Macbook to go somewhere. The stand feels very stable, with no chance of my Macbook falling off. The aluminum C shape does have a slight bend on it if you put extra weight on it, but all in all, it feels very sturdy. The rubber padding on the stand also keeps the stand from scraping or damaging any part of my laptop and I feel very comfortable trusting the stand with my laptop. I would not recommend typing on a laptop keyboard while it is on the stand, but it works great with external keyboards. The swivel feature met my expectations, allowing the laptop to be easily turned. Thankfully, it was not too easy to turn and my laptop does not turn itself when in the stand. It is a nice feature to have, especially because I paid only 5$ extra for it (the price for the swivel stand seems to have increased since then). I am very happy with my purchase, even though it did seem a little expensive. I am wholly satisfied that I spent the extra 20$ to get a great laptop stand that will probably last for years.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 18, 2016
G
Verified Purchase
Ghostly Pat
Bozeman, US
★★★★★ 5
This stand is just perfect!
Style: Swivel Base, Color: Space Gray
I first started looking at stands when I learned that staring at a laptop for hours can cause back injuries. So, I got the idea to use a stand, at home. This stand allows me to have a keyboard and mouse and use my laptop as a glorified desktop with a smaller monitor. I was astonished at the quality of this stand. It is better built than it needs to be, but I am not complaining at all about this. Let's face it, we spend a lot of money on our laptops, and you want to have a great platform to sit your laptop on. I love the ability to swivel the stand. My desk is very close to a window that lets in a lot of the sun at certain times of days. This would result in a glare if not for the ability to spin my computer ever so slightly in either direction to combat this problem. Also, it is a great cable manager with the hole on the back of the stand that makes everything look cleaner and more organized. The color matches my MacBook perfectly and looks like it is an Apple product. Summary: Great product. High quality. Looks great. Swizel is impressive and useful.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 18, 2018

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