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Diono RadianRXT® Birth to Booster Seat - Cobalt

The RadianRXT is a highly versatile car seat that could be the only seat you’ll ever need. It comfortably seats rear-facing children from 5-45 lbs, forward-facing children from 20-80 lbs in 5-point harness, then converts to a booster for children up to 120 lbs. It’s built for strength and safety with a steel alloy frame, reinforced sidewalls, adjustable head support and patented SafeStop® energy absorbing harness. EPS foam surrounds the child's head and body to provide complete side impact protection. The unique SuperLATCH system makes installation easy. The RadianRXT is NCAP crash tested, the industry benchmark for verifying child seat performance in severe accident conditions, and the only car seat rated for LATCH use with a child up to 80 lbs. The RadianRXT sits low on a vehicle seat for easy child boarding, features memory foam padding and infant support pillows. Expandable sides and a longer seat bottom provide extra room and comfort for your growing child. One cup holder is included, with the option to add up to 4 cup holders. In addition to all this versatility, it folds flat for travel and storage, has a 10 year life and offers amazing safety, comfort and convenience your child won’t outgrow.
 

Dimensions: 16" x 17" x 28.5"

Product Notes

Popularity: #60 in Car Seats
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Diono Radian RXT Birth to Booster Car Seat - Storm

1036 reviews
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    REVIEW SNAPSHOT®

    by PowerReviews
    DionoRadianRXT Birth to Booster Seat - Plum
     
    4.8

    (based on 21 reviews)

    100%

    of respondents would recommend this to a friend.

    Pros

    • Durable (20)
    • Safe (20)
    • Comfortable (19)
    • Easy to install (15)
    • Easy to adjust (14)

    Cons

    • Heavy (10)
    • Hard to install (4)

    Best Uses

    • Toddler (18)
    • Infants (16)
    • Newborn (12)
    • Preemies (4)
      • Reviewer Profile:
      • First time parent (10), Parent of two or more children (7)

    Reviewed by 21 customers

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    Displaying reviews 1-15

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    5.0

    Amazing car seat!!!

    By Marie 23

    from New Hampshire

    About Me First Time Parent

    Pros

    • Comfortable
    • Easy to Adjust
    • Sturdy

    Cons

    • Heavy

    Best Uses

    • Infants
    • Newborn
    • Preemies
    • Toddlers

    Comments about RadianRXT Birth to Booster Seat - Plum:

    when the car seat arrived it was very overwhelming to assemble but once but together and installed it did not seem as bad as i thought it was.It is a very compact carseat which is good if you are sitting next to the carseat. very comfortable. my child hated her other car sea and loves this one.
    it is kinda heavy but it is worth it.

    Comment on this review

    (10 of 10 customers found this review helpful)

     
    5.0

    Review after major car accident!

    By thankful

    from san diego

    About Me Medical Professional

    Pros

    • Comfortable
    • Easy to install
    • Safe
    • Sturdy

    Cons

      Best Uses

      • Infants
      • Newborn
      • Toddlers

      Comments about RadianRXT Birth to Booster Seat - Plum:

      I was just in a major fwy car accident. Hit at 60mph and spun through three lanes of traffic with my kids (ages 1,2,&3) three across in this car seat. The kids did not move an inch and the car seats withheld the impact to a degree I never thought possible and my kids came out with no injuries aside from a tiny (1 inch) skin irritation from the strap on my only forward facing child on the side of impact. This is one amazing car seat!

      Comment on this review

      (1 of 1 customers found this review helpful)

       
      5.0

      Greatest seat ever

      By Momof2

      from Ruston, la

      About Me Parent of Two or More Children

      Verified Buyer

      Pros

      • Comfortable
      • Easy to Adjust
      • Easy to install
      • Everything
      • Safe
      • Sturdy
      • Stylish

      Cons

      • Heavy

      Best Uses

      • Infants
      • Toddlers

      Comments about RadianRXT Birth to Booster Seat - Storm:

      We love our diono radians! The are the best quality car seat you can get. Very easy to install, love that you can tether while rearfacing. I feel really safe having both my girls in radians. My 2 1/2 year old my 9 month old rear face in them. We won't have to buy another seat until they're able to use the lap belt alone and can rear face to the Max limits. The diono customer care is also amazing. If you every have any questions they go above and beyond to help you

      Comment on this review

       
      5.0

      Love love this car seat!

      By Kimber the White Lion

      from Wilmington, DE

      About Me First Time Parent

      See all my reviews

      Pros

      • Comfortable
      • Easy to Adjust
      • Easy to Clean
      • Easy to install
      • Safe
      • Sturdy

      Cons

      • Heavy

      Best Uses

      • Infants
      • Toddlers

      Comments about RadianRXT Birth to Booster Seat - Cobalt:

      I originally bought a Britax car seat for my 14 month old daughter to use. After struggling with it for a month I ordered the Diono. What a difference! The Diono is so easy to get your child in and out of, to buckle the straps and tighten it. With the Britax it was all I could do to get her in it and then tightening it was like pulling on a 100 pound weight. The Diono is simple, looks great, is easy to clean etc. We gave away the brand new Britax and bought another one of these! Best move ever!
      The blue is also really pretty...like a cobalt blue. For the second one we got red...also a nice bright fun color.

      Comment on this review

      (1 of 1 customers found this review helpful)

       
      5.0

      BEST carseat on the market!

      By Loving Mom

      from Philadelphia, PA

      About Me First Time Parent

      Pros

      • Comfortable
      • Easy to Clean
      • Easy to install
      • Safe
      • Sturdy
      • Stylish

      Cons

      • Heavy

      Best Uses

      • Infants
      • Newborn
      • Toddlers

      Comments about RadianRXT Birth to Booster Seat - Rugby:

      This car seat is perfect! It is VERY safe, and my son is so comfortable in it that he actually tries to rebuckle himself in when I try to take him out. He has a lot more legroom that he did in many other carseats, especially the Britax Marathon 70. He is RFing at 18 months and will be able to remain this way for a long time. It is so easy to get him in and out, without having to lift him over high sides that many other carseats have and worry about bumping his head on the roof. He can also see much better out of this and sleeps really well. I worried his head wouldn't have anything to rest on, but this has not been the case AT ALL! His head always looks very supported, unlike the Britax, where it tips over to the side. The Rugby color looks so much nicer in person than I expected, and matches my car perfectly. It also was very simple to install and took less than 5 minutes. The only downside is that it is a bit heavy, so I had concerns for when we travel (on a plane), but a roller bag works perfect and we don't have to worry too much. When we have another baby, I will definitely be getting this carseat again since we can fit 3 across a backseat with no problem. I searched every possible car seat on the market, and ended up with the PERFECT one! I would highly recommend this to any mom looking for a safe, comfortable carseat, that is more compact in size. Don't waste your time with the others...this is by far the best.

      Comment on this review

       
      5.0

      Heavy but Quality

      By Mama of 3

      from Aliso Viejo, CA

      About Me Parent of Two or More Children

      Verified Buyer

      Pros

      • Easy to Adjust
      • Easy to install
      • Safe

      Cons

      • Heavy

      Best Uses

      • Toddlers

      Comments about RadianRXT Birth to Booster Seat - Storm:

      Easy to install and adjust.
      Very Heavy but I feel my baby will be safe. And it is only in one car not back and forth.

      Comment on this review

       
      4.0

      great seat for growing children

      By no nickname

      from san francisco

      About Me Grandparent

      See all my reviews

      Verified Buyer

      Pros

      • Comfortable
      • Safe
      • Sturdy

      Cons

      • Hard to Install

      Best Uses

      • Toddlers

      Comments about RadianRXT Birth to Booster Seat - Storm:

      Our grandchild needed a larger carseat. This is a very safe and sturdy one. Like the fact that it can face the rear-most safe position.
      Only problem-we need to remove the seat occasionally-it is not easy to
      install.

      Comment on this review

      (3 of 3 customers found this review helpful)

       
      5.0

      Solid Car Seat

      By Lib's Mum

      from Dover, NH

      About Me First Time Parent

      See all my reviews

      Verified Buyer

      Pros

      • Comfortable
      • Easy to Adjust
      • Easy to install
      • Safe
      • Sturdy
      • Stylish

      Cons

      • Heavy

      Best Uses

      • Infants
      • Newborn

      Comments about RadianRXT Birth to Booster Seat - Storm:

      We have a very tall, skinny baby (98th percentile for height, 50th for weight!) She outgrew her infant seat at 8 months, and there are so many convertible seats out there. We are so happy we went with this seat. It is solid (and heavy, but that's a good thing). We went with the Storm color; it is a great match with our interior, and is soft and cozy, she fell asleep during her first ride in it. For those of you wondering if it fits rear-facing in a smaller car...Yes! It's perfect with the angle adjuster! We have an '09 Prius and it leaves plenty of leg room for the front passenger (my husband and I are both tall, hence the tall child). The latch system makes for an easy install, and I used the tether as well on the front seat leg for added stability. Her seat is as much a part of the structure of the car as my own. Very happy with our decision, and glad that we are set for the rest of her time using a seat/booster!

      Comment on this review

      (2 of 3 customers found this review helpful)

       
      5.0

      Amazing!!!!!

      By Sissy

      from TumTum WA

      Pros

      • Comfortable
      • Easy to Clean
      • Safe
      • Sturdy

      Cons

      • Hard to Install
      • Heavy

      Best Uses

      • Big kids
      • Infants
      • Toddlers

      Comments about RadianRXT Birth to Booster Seat - Shadow:

      When we adopted three little boys, (ages 2 1/2, 18 mon, and 5 mon) and ran out of room in our Subarban, some friends recomended that we get these seats. With five kids in carseats (seven kids total), you can imagine how tight it was in our Suburban. The baby would scream in his infant carseat, so we ended up getting four Sunshine Kids ones, one for each little boy and one for my 5 year old sister. They worked perfect! We could easily install three even in the narrow back row of the Suburban, and in the middle row, it was even comftorable to sit next to a carseat (carseat installed in the center seat of the middle row of seats). Really, the base of these carseats only takes up 3/4 of a seat, leaving more than enough room to sit next to one.

      Pros: Easy to install in a Suburban.
      Cons: HEAVY!

      We got a 15 passenger van, ordered 2 more carseats (company changed names from Sunshine Kids to Diono) in the blue and red (by the way, gorgous colors), to have enough to move around from car to car. They are hard to install in the van, as you have to use the locking clip. It took me a few hours to install 4 seats, but now, one year later, I have instalation down to a science.

      I don't recomend using these if you want to move them around between cars. They are SO HEAVY! However, if they are just going to stay in one car, these are the best.

      Even as a 100% Britax lover, my mom was really pleased with these seats, and says that they are so much better than Britax ever thought of being. The plastic is better quality, the fabric is beautiful (and after a year, still looks like it did when I pulled it out of the box), and the heavy metal construction is so much safer. My dad loves the fact that we won't have to buy anymore carseats, as these will last the kids until they no longer need carseats/booster seats. :)

      We have had to take the covers off a few times to wash them from potty-training accidents, and the new Diono ones come off and on like a breeze. The older Sunshine Kids ones, not so much, but we really don't have to wash them very often, so its not a big deal. I love that the buckels are adult sized and not kid sized. It is so easy to get them in and out of the seats! My sister (now 7) is just about 40 lbs and still has plenty of room left in her seat to grow. These seats hold the toddeler's bodies in a very comfortable position, and the head wings are nice because their heads don't fall forward when they fall asleep. The baby, (now almost 2, 26 lbs) is still rear facing comfortably. We tried puting him forward facing, but he was really fussy. If you are planning on rear-facing a baby over 12 months, or have a limited ammount of room, I strongly recomend the angle adjuster sold as an accessory. It sits them more upright. One disadvantage about these carseats is that you can't recline it very far in a forward facing position.

      These carseats are great, and if you have lots of kids, I definitely recomend these seats.

      Comment on this review

      (1 of 8 customers found this review helpful)

       
      3.0

      Not For Tall Toddlers

      By justknotcookies

      from Bronx, NY

      About Me First Time Parent

      Pros

      • Comfortable
      • Easy to Adjust
      • Easy to install
      • Safe
      • Sturdy
      • Stylish

      Cons

      • Head falls forward
      • Heavy
      • Not Enough Crouch Room
      • Not Enough Head Room
      • Not Made For All Children

      Best Uses

      • Infants
      • Newborn
      • Not For Extra Pounds
      • Not For Tall Toddlers
      • Preemies

      Comments about RadianRXT Birth to Booster Seat - Storm:

      Whoever design this sit did not kept in mind that a child has to wear either a fall or winter jacket. With this in mind my son who is 3 still fits in the straps. The straps are loose on him but the crouch part is so tight that it is a task to fasten him in.

      The width of the seat fits him just right now this sit was made for a skinny child, not a husky or over weight child. There is no room to grow so fitting a 120 lb child I wonder where they will fit unless they are skinny.

      The seat is well constructed, a tad heavy to be carrying on the back with a child in hand but would recommend for a smaller child not a growing toddler.

      Even though my son is 3 he is the height of a 5 year old. Not over weight he is very musclier but he fits snug in the seat.

      The seat is going back. This is the only seat that rave reviews but I sadden that it not going to grow with my son.

      Comment on this review

       
      5.0

      This has been great for my son.

      By Lina

      from Elk Grove, CA

      See all my reviews

      Pros

      • Comfortable
      • Easy to Adjust
      • Easy to Clean
      • Easy to install
      • Safe
      • Sturdy
      • Stylish

      Cons

        Best Uses

        • Infants
        • Toddlers

        Comments about RadianRXT Birth to Booster Seat - Storm:

        I bought this car seat in 2010 when it was Sunshinse Kids. I've never had an issue and my son has loved this car seat. It's been with us on many trips both driving and air. I've always felt that is was sturdy and comfortable even when he was an infant. It doesn't recline when it's facing forward but it does for an infant rear facing. Easy to clean and I do like the latch across the chest as others have failed me. We recently had to replace ours due to an accident. We will be purchasing this car seat again.

        Comment on this review

        (3 of 3 customers found this review helpful)

         
        5.0

        My son is loving it!

        By Matty's mom

        from Torrance, CA

        About Me First Time Parent

        See all my reviews

        Pros

        • Comfortable
        • Easy to Adjust
        • Easy to Clean
        • Easy to install
        • Safe
        • So comfy
        • Sturdy
        • Stylish

        Cons

        • Heavy

        Best Uses

        • For travelling
        • Infants
        • Newborn
        • Preemies
        • Toddlers

        Comments about RadianRXT Birth to Booster Seat - Cobalt:

        We just got this car seat today and it's really sturdy. My 4 month old son usually hate when put in his infant car seat (britax) but with this one he was giggling and happy. I don't know why other people find it tricky to install but we find it very easy. I agree with the other reviews..I wish we bought this sooner and not wasted the money we bought for the britax infant car seat and now stocked in its base in just 3 months upon using it. BTW the cobalt color is more like royal blue in person and we love it!

        Comment on this review

         
        5.0

        Great safe seat

        By neen

        from KCMO

        About Me First Time Parent

        See all my reviews

        Pros

        • Safe
        • Sturdy
        • Stylish

        Cons

        • Bulky
        • Difficult To Adjust

        Best Uses

        • Toddlers

        Comments about RadianRXT Birth to Booster Seat - Shadow:

        This is a metal structure car seat that is great. It will hold the baby/toddler for many years. I love that it's easy to get my son in and out. I would highly recommend buying the seat wedge too.

        Comment on this review

        (1 of 1 customers found this review helpful)

         
        5.0

        We want another!

        By Mommy times 3

        from Pyeongtek, South Korea

        About Me Parent of Two or More Children

        Pros

        • Comfortable
        • Easy to Adjust
        • Easy to Clean
        • Easy to install
        • Safe
        • Sturdy
        • Stylish

        Cons

          Best Uses

          • Infants
          • Newborn
          • Toddlers

          Comments about RadianRXT Birth to Booster Seat - Daytona:

          We bought this origonally for our newborn but ended up using it for our 2 year old because it sits more upright than his previous seat did. And we love it! We plan on replacing the old carseat that got handed down to the new baby with this seat also. We'd love to have one for our 4 year old too if we can manage it! We will even be using this on the plane when we fly home.

          Comment on this review

          (5 of 5 customers found this review helpful)

           
          5.0

          Love this seat!

          By Mom of Three

          from ca

          About Me Parent of Two or More Children

          Pros

          • Comfortable
          • Safe
          • Sturdy

          Cons

          • Hard to Install

          Best Uses

          • Infants
          • Newborn
          • Toddlers

          Comments about RadianRXT Birth to Booster Seat - Storm:

          Love this seat. We are expecting our third baby and were dreading buying a newer bigger car and these fit great in our Highlander. We currently have two radians and our infant seat and this was the only seat that could fit. We also went from two Britax seats to these and I will say the Radian feels and seems WAY more sturdy and safer. It is a bit hard to set up three across but that would be expected with setting up any seats three across. Love it and love not having to buy a new car!

          Comment on this review

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