Diono 2019 Radian 3R Convertible Car Seat

Diono 2019 Radian 3R Convertible Car Seat

$199.00 $169.15
(1 review) Write a Review

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Diono Radian 3 R Convertible Car Seat

Unmatched safety. All-in-one simplicity.

Your child’s security is our top priority. We engineered our radian® 3R with premium, innovative features like a steel alloy frame, aluminum reinforced sidewalls, energy absorbing EPS foam and a reinforced adjustable head support to keep your little one protected and comfortable.

Some say three’s a crowd. We say, the more the merrier! Our radian® 3R car seats fit 3-across in most mid-size vehicles. 

Extended rear-facing

The radian® 3R keeps children comfortably rear-facing from 5-40 pounds for the safest possible position.

Room to grow

Accommodates forward-facing children up to 65 pounds in a 5-point harness and converts to booster mode for kids 50-120 pounds. The aluminum reinforced, adjustable head support and sidewalls provide additional side impact protection.

Worth the Weight

Our convertible car seats are made from steel for safety you can feel. The fully integrated steel frame is wrapped in thick engineered plastic to withstand severe crash forces. Deep, aluminum reinforced sidewalls provide excellent side impact protection, while energy absorbing EPS foam surrounds your child for ultimate safety. Diono car seats are definitely worth the weight.


  • ORIGINAL 3 ACROSS: The Radian 3R All-in-One Convertible is an affordable ultramodern child car seat that protects and makes traveling with kids as safe and easy as possible. Fit 3 Radians across in most family-size vehicles—FAA-approved for air travel.
  • SUPERIOR EXTENDED REAR-FACING SAFETY & SECURITY: Featuring our powerful integrated steel frame, our convertible car seat protects infants rear-facing 5-40 lbs, forward-facing up to 65 lbs in 5 pt harness, and converts to booster for kids 50-100 lbs.
  • DYNAMIC HEAD & SIDE IMPACT PROTECTION: Reinforced with memory foam seat and aluminum side impact walls lined with energy-absorbing EPS foam, Radian safeguards kids in a robust cloud of cushiony protective comfort.
  • MAXIMUM SAFETY & EASY INSTALLATION: Utilizing our SuperLATCH audible-click/visual-locking indicator connector system, 5 shoulder and 3 buckle positions, expandable leg rests, and a non-slip rubber base—all for a secure installation.
  • TRAVELING THE WORLD IN COMFORT: Created with an easily removable premium plush-knit machine washable fabric cover, a seat that’s easy for your child to climb in and out of as they grow, and folds flat for easy storage.


Extended Rear-Facing: From birth to 40lbs
Forward Facing: 20 to 65 lbs
Booster Mount: 50 to 100 lbs

1 Review

  • 5
    A+ Car Seat

    Posted by Sandra on Jun 11th 2019

    Knowing that our baby was about to outgrow her infant seat, but my nerves in high gear. I think I spent most of my pregnancy researching infant seats, and only glanced at convertibles, figuring I would have one chosen before needing one. We tested cleks, nunas, maxi-cosis, and the Diono's were a pleasent surprice. They were sturdy, without being too hard, and the fabrics were very cushiony, without a high-price tag. The true test was the easy of installation, we got a chance to test it at kidsland, and take it down to my car, and was super easy to install. There's a bit of weight to it, but that's expected, but the latches snap on easily without having to manuever and pretzel myself to install.

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