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Diono Radian RXT Convertible Car Seat - Daytona

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Diono Radian RXT Convertible Car Seat - Daytona - Diono  - Babies"R"Us
Diono Radian RXT Convertible Car Seat - Daytona - Diono  - Babies"R"Us
Diono Radian RXT Convertible Car Seat - Daytona - Diono  - Babies"R"Us
  • $339.99
  • $299.99
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Thanks to a versatile design, the Diono RadianRXT Birth to Booster Car Seat could be the only seat you'll ever need. With its adjustable features, this seat can safely accommodate children from birth until they have grown to 120 pounds and 57 inches tall. The RadianRXT is designed with your child’s security and safety as top priorities. Premium materials and thoughtful safety features like a steel alloy frame, aluminum reinforced side walls, energy absorbing EPS foam, a five-point harness, and adjustable head support keep your mind at ease as your little one stays safe and sound.

  • Seat features three modes to accommodate growing children
  • Designed with a steel alloy frame and energy absorbing EPS foam
  • Reinforced head support for additional side impact protection
  • Easy-to-clean cover is soft against child's skin
  • Memory foam padding for extra comfort
  • SuperLATCH for a secure installation
  • Five-point harness provides dependable security
  • Infant support cushions keep your baby positioned correctly
  • Approved for use on airplanes
  • Age/Weight Requirements: 5 - 45 pounds rear-facing; 20 - 80 pounds forward-facing. Booster mode fits children weighing up to 120 pounds or up to 57 inches tall
  • Assembly Requirements: Some assembly required
  • Warranty: One-year limited warranty

Included in the Box

RadianRXT Daytona Birth to Booster Car Seat, rear-facing base, infant support cushions, SafeStop harness, rear-facing tether connector strap, one cup holder, and instruction manual.

*For vehicles manufactured AFTER September 2005. For vehicles manufactured prior to September 2005, consult the vehicle owner's manual for lower anchor weight limits.

Trademark Information:

RadianRXT Convertible plus Booster Car Seat (Daytona) Product Image


Steel Alloy Frame

Steel Alloy Frame Padded with EPS Foam Protects Your Child

The RadianRXT features a steel alloy frame for a strong foundation. Aluminum reinforced side walls and head support are lined with thick, energy absorbing EPS foam for side impact protection. The SafeStop energy absorbing harness provides extra protection for children 20 to 40 pounds. When installed, the harness's bungee-like energy absorption reduces impact when your child is seated in the forward-facing position. Additionally, the RadianRXT boasts rear-facing tether capability to reduce seat rotation in the event of an impact.

Accomodates Growing Children

Versatile Seat Grows With Your Child

The RadianRXT offers the adaptability you need to keep your child's car rides safe and comfortable. The seat fits children in the rear-facing position from 5 to 45 pounds and from 20 to 80 pounds in the forward-facing position. An adjustable, reinforced head support with 12 height settings ensures a custom fit and offers additional side impact safety. With longevity in mind, this model converts to a booster seat for kids up to 120 pounds.

Rear-Facing Position

Deep Seat Design and Plush Cover for a Comfy Ride

All Radian seats have a deep shell to cradle your child for a more comfortable rear-facing ride and to provide a higher rear-facing capacity. A plush cloth surface feels soft against your little one's skin. Expandable sides and a longer seat bottom offer better leg support and help keep children cradled in a custom fit that adapts throughout their physical development. Two forward-facing recline positions allow the RadianRXT to fit a wide variety of vehicle seats. Body support cushions keep infants and babies snug and positioned correctly.

SuperLATCH Installation

SuperLATCH Feature for Secure Installation

Diono’s SuperLATCH feature makes use of your car's LATCH system to take advantage of the RadianRXT's full weight capacity.* The SuperLATCH connectors are successfully crash tested for children weighing up to 45 pounds rear-facing and up to 80 pounds forward-facing. In vehicles with LATCH anchors, SuperLATCH is a safe, convenient way to install the RadianRXT. Rubber bottom grips protect your car's upholstery and ensure the seat won't slide after installation.

Compact Design

Slim Profile and Convenient Features

A slim profile means the RadianRXT can sit three across in most vehicles. Because it doesn't have a pedestal, the seat sits relatively low which allows the child to board with ease. The seat folds up when not in use, so storing or transporting the seat is easy. The machine-washable cover and cup holder compatibility (one included, you can add up to four per seat) make this car seat even more convenient.

NCAP Crash Tested

Testing and Warranty Information

This car seat surpasses federal crash test standards and meets NCAP standards, the industry benchmark for verifying child seat performance in severe accident conditions. The RXT is tested at its maximum forward-facing, rear-facing and booster weight capacities and is rated for an impressive 10 years of life. The car seat is also FAA approved for use on airplanes. The Diono RadianRXT Birth to Booster Car Seat is backed by a manufacturer's limited one-year warranty.

Product Description

The Diono RadianRXT is a highly versatile car seat that could be the only seat youll 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. Its built for strength and safety with a steel alloy frame, reinforced sidewalls, adjustable head support and our patented SafeStop energy absorbing harness. EPS foam surrounds the child's head and body to provide complete side impact protection. Our 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 wont outgrow.


  • The Diono RadianRXT is rear-facing: 5 - 45 lbs; Forward-facing: 20 - 80 lbs and up to 57 inches in a 5-point harness; Booster to 120 lbs
  • Steel alloy frame and aluminum reinforced sides; SafeStop energy absorbing harness; Adjustable head support, reinforced for complete side impact safety: Energy absorbing EPS foam panels on all sides
  • Rear-facing tether capability; LATCH installation up to 80 lb child; 5 shoulder and 3 buckle positions for custom fit; Expandable sides and longer seat bottom for leg support and comfort
  • 2 recline positions in forward-facing mode; Sits low on vehicle seat for easy child boarding; Fits 3 across in a mid-size vehicle and offers more shoulder space
  • Folds flat for travel and storage

Additional Info





5 lbs

120 lbs


Adjustable Head Support,Cup Holder(s)



31.3 pounds

29.5 x 17.2 x 10.0

How to Get It

  • This item can be shipped to the entire United States including Alaska, Hawaii, and all U.S. territories including Puerto Rico
  • This item can also be shipped to APO/FPO addresses and to P.O. Boxes in all 50 states
  • Due to shipping restrictions, Ship Charges will be separate from other items in your order
  • This item will ship by itself

  • This item may be shipped via Standard Shipping, Expedited Shipping or Express Shipping
  • Please Note: Some addresses are eligible for Standard Shipping only (APO/FPO, P.O. Boxes, U.S. Territories and Puerto Rico)

(learn more):

  • This item is sold online only (not sold in stores)
  • Orders placed for Store Pickup will receive online pricing and promotions
  • In-stock status is approximate and may not reflect recent sales
  • Not all items are carried at all stores. Please click the "Select a store" link to check product availability
This item may be shipped in the manufacturer's original packaging, which could reveal the contents of the box

Average Customer Rating:

by PowerReviews
Diono Radian RXT Convertible Car Seat - Daytona

(based on 197 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars




of respondents would recommend this to a friend.


  • Comfortable (9)
  • Durable (9)
  • Safe (9)
  • Stylish (9)
  • Easy to adjust (7)


  • Heavy (5)

Best Uses

  • Infants (8)
  • Toddler (8)
  • Newborn (5)
    • Reviewer Profile:
    • Parent of two or more children (5), First time parent (4)

Most Helpful Positive Review


Survived Car Crash

I ordered this car seat over a year ago and it has held up very well! It still looked brand new and though heavy, once installed it did not budge an inch. My...Read complete review

I ordered this car seat over a year ago and it has held up very well! It still looked brand new and though heavy, once installed it did not budge an inch. My daughter (just turned 2) was very comfortable in it and would sit in it for hours compared to her infant car seat. Yesterday it was tested to its fullest when my daughter and I were in a car crash that totaled the car. We smashed into the ground and rolled over a few times and she felt none of it! The car seat absorbed everything and my daughter was actually laughing once the car stopped. No whiplash and the car seat had not budged an inch due to its weight and how it was installed. The doctor and police told us to buy the same car seat again because it is what kept her from being harmed and were amazed that she didn't even have a little bit of whiplash. I did not fair so well, but will be buying this again happy to know it is true quality!


Most Helpful Critical Review


Disappointed and not impressed...

I had to do my research on the best carseat for our family since I have a smaller car ('05 Toyota Corolla)--and realized that I may have an issue with giving the...Read complete review

I had to do my research on the best carseat for our family since I have a smaller car ('05 Toyota Corolla)--and realized that I may have an issue with giving the front passenger enough leg room for them to be somewhat comfortable. After thorough research for the best type of carseats for compact cars, it came down to the Diono Radian RXT and a competitor brand. While I wasn't keen on the price (paid over $550 for two for our two vehicles), I felt that it was the right fit for our family based on the exceptional reviews I had read about, espeically for the safety reasons. My gripe with this carseat is that once my son is in it (currently it is rear facing) and I pull up on the strap to tighten him in, the straps NEVER get tight enough. At first I thought that maybe it was the way I installed it, so I uninstalled it, checked the straps and reinstalled it. Again, I have to pull so hard on the strap that I can literally make my car rock back and forth! I thought maybe it was just the angle that it happened to be in while in my car, but when I tried the strap on the seat in my husband's car (Mercury Mariner), it was even worse! You can barely pull up on the strap--it's almost like something is getting caught and won't let you pull up on it, but there's nothing in the way, so I don't know why it's so hard. To "fix" this, I have to pull on the (exposed) straps in the back to get the slack tightened and then at the same time, pull up on the strap to get rid of the slack. I cringe everytime I put my son in it and wish that I had never bought them. Another reason why I bought them was because it was rated to 120 pounds and that it would have to be the only car seat I buy. Instead of thinking that this is the only car seat I'll have to buy, I'm debating if I should purchase new ones--and who has the money to do that all over again...To make matters worse, we moved at the same time and of course threw out the boxes, so returning them wasn't an option. Overall, I was very excited to get them, but disappointed once they were installed.

Reviewed by 197 customers

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Love it!

By Aide06

from Fort Irwin, CA, United States

Comments about Diono Radian RXT Convertible Car Seat - Daytona:

We have had this seat for about a year! First in a small car and this seat gave us tons of space for others to sit in the back, even to install other seats next to him. We love how slender it is and how easy it is to install. Our son loves the low profile which allows him to see everything that is going on.

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(1 of 1 customers found this review helpful)


This seat saved my son

By jordonsmum

from Victoria, BC, Canada

Comments about Diono Radian RXT Convertible Car Seat - Daytona:

I own a daycare and purchased diono radian seats because of their crash ratings and because of their slender structure. It is easy to fit 3 across the back of almost any vehicle. We were sitting at a stop light on the highway this past weekend when a commercial van ploughed into the back end of my van. He was texting and driving and never applied the breaks. The doctor said my 8 yr old son must have been sitting in an amazing car seat because with the number of bruises he sustained, he should have sustained more serious injuries. Thank you Diono for keeping my son safe!!!!

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We were in a car accident and my son isn't injured

By Dawn

from Iowa

Comments about Diono Radian RXT Convertible Car Seat - Daytona:

My son is 22 mo and approx 28 lbs. & still rear facing. We were in a car accident and waiting to here if my car is totalled. It was not drivable after the accident. My son didn't cry other than the initial scream of surprise when I hit a car in front of me. He isn't showing any signs of soreness or discomfort. I'm pleased. My only compliant is that this car seat is heavy and difficult to install but otherwise, so worth it.

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Love, Love, Love our car seat!!!

By Heather88

from North Dakota, United States

Comments about Diono Radian RXT Convertible Car Seat - Daytona:

We have had our Diono RXT for 6+ months and love it! We drive long distances to visit our family and it made travel easy! Our daughter doesn't get crabby because she is so comfortable. It also adds a huge piece of mind as we live in the oil field with lots of heavy truck traffic.

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(2 of 2 customers found this review helpful)


Harnesses tall, older kids


from Rhode Island

Comments about Diono Radian RXT Convertible Car Seat - Daytona:

I've had this seat for over a year. My 7 year old is tall (49 inches), but doesn't weigh enough for just a booster/seatbelt to keep her safe in a crash (she's just barely 40 pounds). I wanted to find a seat where we could still keep her in a 5-point harness. We have owned eight different seats for our two kids and this one, by far, is my favorite. I believe Diono has created close to *the* most perfect seat on the market. Pros: 1) Literally the only seat you'd need to buy to last your son or daughter's entire childhood. Rear-faces for newborns, all the way up to 45 lbs. Forward-faces with 5-point harness up to 80 lbs (my 7 year old is 49 inches tall and is still wearing the 5-point harness - she cannot do this in any other seat, even seats that boast extended harnessing). Converts to a booster up to 120 lbs. 2) Has a ten-year life, compared to 4-6 years for most other seats 3) Durable and safe with an easily-adjustable headrest and side-impact protection. I feel like my kid is in a tank when she's sitting in this 4) Folds for travel 5) Airline approved (not all seats are!) 6) Narrow enough to fit three across the backseat of a sedan - which is a huge consideration if you don't have a minivan or a 3rd row in your vehicle but you have 2 or more kids. Cons: 1) It's pricey (shop around, prices vary widely) 2) It's HEAVY (but that goes along with its safety and durability, so it's a trade-off) 3) It's not the easiest to install. I don't like the LATCH clips; I prefer the style of LATCH that other companies like Britax use, where you can adjust from both sides. This one only has the adjuster on one side. I don't feel like I can get as tight a fit as I can with other seats. It is also difficult to install using the seatbelt. I have very small hands, but I have such a hard time sticking my hands back there to thread the seatbelt through. 4) The adjustable headrest is a little *too* easy to adjust. It tends to slide down on my daughter with normal use (this could be a defect in my particular seat, though). Not enough of a nuisance to dissuade you from buying, though. 5). To adjust the height of the shoulder straps, you have to uninstall the seat, partially take off the cover, un-hook the straps from behind the seat, un-thread them from their current setting, and re-thread them back through the slots at the desired height. This is a big inconvenience to me because a lot of other comparable seats on the market have figured out how to adjust the height with the turn of a knob, and you don't have to un-install the seat. Come on Diono, you can do this. If you figure this out, you will have created the perfect seat. 6). My daughter complains that there is not enough padding on the seat part of the seat. I agree that it is minimal padding. On long trips, she complains about how uncomfortable she is, and she is a great traveler who rarely complains. She cannot be the only one. Overall, the pros outweigh the cons, and I wholeheartedly recommend this incredibly safe and versatile seat. It is expensive, but worth its weight in gold.

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The Perfect Carseat

By jess88

from Montana

Comments about Diono Radian RXT Convertible Car Seat - Daytona:

This is the best carseat we have had. Very comfortable, easy to clean, even stylish!

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(2 of 2 customers found this review helpful)


Best Seat for Moms of Multiple Children


from Orlando, FL, United States

Comments about Diono Radian RXT Convertible Car Seat - Daytona:

I own three Diono Radian RXT carseats. I have a 2 year old, 4 year old and 5 year old. They really do fit three across! I have been able to do it in my JEEP Liberty, GMC Terrain, and my Chrysler Town and Country. They are the best!

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By originalpandora

from Beaufort, SC, United States

Comments about Diono Radian RXT Convertible Car Seat - Daytona:

My LO is so much happier in the car now. She loves the comfort and extra room!

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Excellent Buy!

By Jess

from Sioux Falls, SD

About Me First Time Parent


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


  • Heavy

Best Uses

  • Infants
  • Toddlers

Comments about Diono Radian RXT Convertible Car Seat - Daytona:

It was tough to actually find this in stock, I waited months for it to become available in the blue but man was it worth the wait. It's solid, my son loves it, it super comfy for him and I feel like he's incredibly safe in it. It's hard to move from vehicle to vehicle but I was looking for something safe not quick and easy. Love love love!

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Great reviews!

By Marisol02

from Illinois, United States

Comments about Diono Radian RXT Convertible Car Seat - Daytona:

I have a group of moms, and many of them have this car seat and have recommended it to me. I have been looking for rear facing car seats for a while now, and this one looks comfortable!

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