Car Seat Guide – Diono Radian RXT 2

Here at Daily Mom, we’ve always been huge fans of Diono car seats, and it’s easy to see why. These seats boast some of the highest safety standards on the market, offer high rear-facing and forward-facing weight limits, and they’re incredibly plush and comfortable for our little ones to ride in. We’re psyched to be able to share with you the latest addition to the Diono family – the newly improved Radian RXT

Car seat safety is something that we at Daily Mom are clearly very passionate about. If you need more of a reasoning as to why, just check out our articles on Rear Facing: Just the Facts or The 411 On Car Seat Safety. So naturally, if there is a car seat on the market with amazing rear facing capacities along with a multitude of other safety features, we really need to introduce it to our readers. Our children are our most precious cargo, and while we have little control over all of the other drivers on the road, we do have full control of ensuring that our cargo is buckled in as safely as possible in seats that meet end exceed all safety standards. The Diono offers its seat, the Radian RXT, as the perfect option for those looking for functional, safe, and comfortable seats that can last their child all the way from birth up to 80 lbs as a convertible car seat and then continue keeping them safe from 50 lbs to 120 lbs as a booster.  

The Seat

The new Diono Radian RXT is made of the most comfortable, plush foam with a silky-smooth fabric overlay – it’s a car seat that your child will actually enjoy riding in. Heck, we wouldn’t even mind having one for us in an adult size! Each new Radian RXT is made with energy-absorbing EPS foam – similar to the feeling of memory foam, but more supportive.  The Radian RXT’s 5-point harness comes with a padded cover, which also helps to make the seat more comfortable.

This is a convertible car seat that will last your child from infancy through toddlerhood, and all the way until he or she is ready for a booster seat using your vehicle’s seat belt (yes, really that long!). Our preschool-aged Daily Kids love the “big kid” design of the new Radian RXT because it looks more like a booster seat with a 5-point harness vs. a convertible car seat.

Diono consistently meets or exceeds federal safety requirements, so you can rest easy knowing that the Radian RXT will protect your child in a crash. Each Diono Radian RXT is made with a full steel frame for unmatched stability and protection, and the adjustable head support provides additional side impact protection. And one of our very most favorite parts about this car seat is that it offers true extended rear-facing capability, up to 45 pounds – which is one of the highest rear-facing limits on the market today. We are huge proponents of extended rear-facing, so we love that this seat allows our children to be safer, longer.

If you have a big family, the Radian RXT is an excellent choice. Its narrow profile allows you to fit three RXTs across one row of seats in most mid-size vehicles (can we get a hooray?).

Features to Love


  • Steel alloy frame
  • Aluminum-reinforced side walls
  • Energy-absorbing EPS foam
  • SafeStop energy-absorbing 5-point harness
  • 12-position adjustable headrest, 5 shoulder and 3 buckle positions
  • Rear facing 5 – 45 pounds
  • Forward facing up to 20 – 80 pounds in 5-point harness
  • Booster mode for children 50 – 120 pounds
  • Head and body support cushions for newborns/infants
  • Takes your child from infancy through booster seat stage
  • Perfect for travel – FAA-certified, folds flat, wear as a backpack or purchase carry straps
  • Machine washable cover
  • Cup holder included
  • Rubber bottom grips for no-slip installation
  • Expandable sides and long seat bottom allow proper leg support
  • Rear-facing tether capability

The Brand

Diono began in Seattle in 1999 and has grown to be a company loved by parents and family and fueled by the safety of children. Since their humble beginnings they have not only released several car seats and booster seats that have far exceeded safety standards but many of them have also won notable awards.

The Monterey has won:

  • Mother & Baby “Best Junior Car Seat”
  • Creative Child “Top Choice of the Year”
  • Parent Tested Parent Approved “Seal of Approval”
  • Consumer Digest “Best Buy“
  • Practical Parenting “Silver Award”

In addition, The Radian has also been recognized for and won:

  • Creative Child “Top Choice of the Year”
  • Parent Tested Parent Approved “Seal of Approval”
  • National Parenting Center “Seal of Approval”
  • Pregnancy & Newborn “Reader’s Choice Award”

Diono continues to impress the carseat market and are loved across the globe. They will continue to fuel growth and innovation and meet and exceed safety standards within the juvenile industry.

When it comes time for you to invest in your first (or fourth carseat) or the time has come to invest in a new and improved carseat, the Diono Radian RXT will truly cover all of your needs from birth on. You can rest assured that your most precious cargo will be riding as safely as possible in this seat.


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For more great car seat guides and recommendations for other kid gear, check out our DISCOVER: Gear section!



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Heather is the mom behind the blog, Cookies For Breakfast. Reality TV addict. Natural living enthusiast. Accidental hippie. Comedy ninja. Loves big sunglasses, seasonal cocktails, and of course, cookies for breakfast.

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