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Diono

Diono Radian 3RXT SafePlus Max Rear and Forward-Facing Convertible Car Seat, 2-in-1 Anti-Rebound Bar and Calf-Support, 10 Years 1 Car Seat, Slim Fit 3 Across, Purple Wildberry

  • Based on 419 reviews
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$349.99 Why this price?
Save $50.00 was $399.99

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To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

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Features

  • 10 Years 1 Car Seat - From birth to booster (4-120 lb.) it's all you will need. Grows with your child with ultimate protection on every road trip. Complete with 4 modes in 1 seat!
  • SafePlus Engineering - Allows for rear-facing up to 50 lb., with 3 modes of newborn protection, and 2-in-1 anti-rebound bar and calf support to reduce rebound rotation.
  • Fits 3-Across - Our famous slim-fit design with SafePlus 8-layer side impact protection and zero compromises to safety, space, or comfort.
  • Reinforced Automotive Grade High-Strength Steel Core - Complete with multi-position calf support, our unique core shell shields and protects your child.
  • Convenience & Comfort - One hand easy-adjust 12-position headrest and memory foam, washable seat cover for busy families on the go.

Brand: Diono


Installation Type: Latch


Color: Purple Wildberry


Orientation: Convertible


Product Dimensions: 16"D x 17"W x 28.5"H


Product Dimensions: ‎16 x 17 x 28.5 inches


Item model number: ‎50152


Minimum weight recommendation: ‎5 Pounds


Maximum weight recommendation: ‎100 Pounds


Minimum height recommendation: ‎18.1 Inches


Maximum height recommendation: ‎57.5 Inches


Material Composition: ‎100% Polyester


Style: ‎Radian 3RXT SafePlus Max


Number of reclining positions: ‎12


Batteries required: ‎No


Orientation: ‎Convertible


Rear-facing minimum child weight: ‎5 Pounds


Rear-facing maximum child weight: ‎50 Pounds


Forward-facing minimum child weight: ‎26 Pounds


Forward-facing maximum child weight: ‎65 Pounds


Harness type: ‎5-Point


Item Weight: ‎31.9 pounds


Frequently asked questions

This product is currently out of stock. Please check back later for shipping info.

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • BUY NOW! Diono Foly
Style: Radian 3RXT SafePlus Max Color: Purple Wildberry
My favorite car seat! I ordered the Diono Radian 3RXT four years ago for one of my children and I knew when I was in the market for a car seat again, THIS was the only option. I LOVE how this seat has a steel frame, it is heavy, sturdy, and everything you would want in a car seat! Diono has made some improvements to this seat over the years (comparing my seat from 4 years ago to this one). Even without improvements I would ALWAYS recommend this seat! I love that they fit 3 across comfortably and it is also comfortable to sit next since it is so slim. My children have never complained about comfort when riding in these! They fall asleep everytime we hit the road which is a testament to how great these are! They have good padding with this new model having even more padding! Very easy to install and a great value for how awesome this seat is! Dion I regularly has sales on Amazon and I purchased both my seats while on sale saving $85 dollars on one purchase and over $100 saving on the other. I would love to get two more of these seats so we could have them in both vehicles!! You will not be disappointed with this seat! We are a Diono Family for life! They even have comparable seat protectors that fit perfectly under their car seats without compromising safety! Check these seats out!!! You won’t regret it! ... show more
Reviewed in the United States on November 18, 2025 by Nicole
    • It’s big!!
I like this seat, but it’s HUGE and heavy!! Made great but can be bulky. Just keep that in mind. But these worked without seat is comfy and my child loves it. Seems very safe!!
Reviewed in the United States on March 20, 2025 by Amazon Customer
    • Well built super sturdy!
Style: Radian 3RXT SafePlus Max Color: Purple Wildberry
This is super well built and HEAVY! But in a good way. My daughter fits really well in it and she’s comfortable. If using in the rear facing configuration be aware that it is very long front to back so best for larger vehicles. In front facing configuration it fits really well in all sorts of vehicles! We’re using it rear facing and it fits in our very large vehicle. ... show more
Reviewed in the United States on November 25, 2025 by RW
    • Worth it
Pricey but worth it. Great head support and legs support. My child loves this car seat and says its very comfortable. Long car ride approved.
Reviewed in the United States on February 4, 2025 by Emma
    • WHERE IS MY REFUND?
Product is too big and bulky, did not fit in my car well. I returned it and they are delaying my refund due to the package being stuck in KY. HOW IS THAT MY PROBLEM? It’s UPS’ problem, I returned within the timeline. If I don’t receive my refund, I will open a claim with AMEX!
Reviewed in the United States on August 12, 2025 by Amazon Customer
    • Perfect for baby
Great product9
Reviewed in the United States on October 13, 2025 by Amazon Customer
    • Better than a Roll Cage
Style: Radian 3RXT SafePlus Max Color: Purple Wildberry
Very well constructed. Worth the price.
Reviewed in the United States on December 2, 2025 by Roger Hernandez
    • Great, but not perfect
Style: Radian 3RXT SafePlus Max Color: Purple Wildberry
Everything about this seat is great except the button for loosening the straps is kind of hidden and hard to press. Really annoying when you are constantly putting your child in and taking them out of the car all day.
Reviewed in the United States on October 31, 2025 by Byron Ho

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