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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
  • $271.99
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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

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

Customer Reviews Summary & Ask a question

Average Customer Rating:

by PowerReviews
Diono Radian RXT Convertible Car Seat - Daytona

(based on 167 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars




of respondents would recommend this to a friend.


  • Comfortable (8)
  • Durable (8)
  • Safe (8)
  • Stylish (8)
  • Easy to adjust (7)


  • Heavy (4)

Best Uses

  • Infants (7)
  • Toddler (7)
  • Newborn (5)
    • Reviewer Profile:
    • Parent of two or more children (5), First time parent (3)

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


Nice carseat but...

We bought this seat a couple months ago. We chose this seat because of its' rating, and steel frame. When I took it out of the box, I liked that it folds...Read complete review

We bought this seat a couple months ago. We chose this seat because of its' rating, and steel frame. When I took it out of the box, I liked that it folds but it is quite heavy. My husband had a hard time installing it in my car (Outback) and we had to move the front seat up so much that a passenger couldn't sit comfortably. I also feel like I can't tighten the straps enough on my son. We ended up buying another convertible car seat for my car and my husband put the Diono in his car (Audi SUV) with the angle adjuster. The angle adjuster did help quite a bit in being able to keep the passenger seat in a comfortable spot.

Reviewed by 167 customers

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Great for tall kids/travel

By dionofan

from Toronto, ON, Canada

Comments about Diono Radian RXT Convertible Car Seat - Daytona:

Best decision ever to buy this seat. We loved the first one so much we bought a second for another car. When we bought the seat our 11-month-old daughter was very tall for her age and we wanted something that would allow her to be rear-facing as long as possible. She would have grown out of most car seats in no time. She loves the Radian. Things we like: Durable construction and material (you can FEEL the reason this seat costs more, it doesn't feel cheap like so many others) No sweat material -- she doesn't overheat in this seat Easy install -- we have one in a car with latch and another with seatbelt only and they are both pretty simple Fold and carry -- we've folded this up and carried it as a backpack on a train and it's been great, though it is heavy and not the most comfortable thing to carry, but you're carrying a car seat on your back and that's pretty awesome in itself Things we don't like: Ratcheting -- the constant ratcheting to tighten this car seat is a huge drawback. It's very frustrating and takes ages, especially when it's snowstorming and you have to have the door open the entire time while you're ratcheting it tight bit by bit by bit. There has got to be a better solution to this. Space -- We have this seat rear-facing in a Honda Civic and a Honda CR-V. In the Civic it has rendered the front passenger seat completely unusable and in the CR-V the front passenger seat can only be used by someone small and for short distances only. We understand that this is the drawback of having a rear-facing seat that will suit a tall child, but it's still a real challenge. Diono markets this as a three-across seat, but only if those three-across are forward facing. You could never get three-across rear facing and still expect to be able to drive your car. All in all a great seat and well worth the money. I have recommended it many, many times. Also, the customer service has been excellent.

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Compact & functional

By myrna

from Truro, NS, Canada

Comments about Diono Radian RXT Convertible Car Seat - Daytona:

Excellent car seat. Easy to tighten and easy to loosen. Compact and functional. Love it!

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Diono radian rxt

By Angie

from Battle Ground, WA, United States

Comments about Diono Radian RXT Convertible Car Seat - Daytona:

I've owned several different car seats and this is by far the BEST one!!!! We love it!!!

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Rest easy, great car seat

By JoAnne

from Calgary, AB, Canada

Comments about Diono Radian RXT Convertible Car Seat - Daytona:

I have used this car seat since my daughter graduated from her bucket seat at age 6 months. For the past 9-months, I have uninstalled and installed in three different vehicles without any hassle. My primary vehicle this seat this is mostly installed (rear facing) in is a compact car; the only downside is that we can only place it in the rear middle seat using a seat belt, which isn’t a big deal since this is the safest place for her. This seat is heavy, but I don't mind knowing that it's built for safety in mind. She is happy in this seat; there are removable infant supports as well as removable toddler support. Easy to adjust seat belt harness tightness for safety, as well changing the seat belt to the right shoulder slot for the proper height is easy. We did order the angle pad, but haven’t needed to use this yet. Easy to install rear facing with the tether strap and anchor strap that came with it. Love the shoulder belt pads, no more seat belts rubbing her neck where other seats left marks. Disadvantages: • Heavy • No over the shoulder carry strap with this seat or if it does I was unclear on where it is. • Tall back rest, not suitable for sub-compact cars (rear facing only) Overall, I’m glad I bought this car seat as the primary seat in my car and I would highly recommend this seat, but as I do need another seat, I wouldn’t purchase another one like this as a secondary. I do travel occasionally and I need to take the car seat and this would be too heavy for me to deal with as well as a stroller, luggage and a toddler all on my own. It would be easier to leave in the car when traveling and not have to worry about installing after a long trip.

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Love this carseat

By lovestosing89

from Pocatello, ID, United States

Comments about Diono Radian RXT Convertible Car Seat - Daytona:

I can't say anything bad about this car seat. I love it. My 13 month old daughter loves it. She's especially tall for her age (92nd percentile) so we decided on this taller car seat over the comparable Britax. I'm glad we did. This one is so comfortable for her. She rarely complains about being in it, even for long drives. We bought the Styrofoam insert that goes under it and changes the angle, but we really didn't even have to.

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Comfy & Safe!

By Jules

from Victoria, BC, Canada

Comments about Diono Radian RXT Convertible Car Seat - Daytona:

We are very pleased with our Diono Radian RXT car seat! It is very comfortable for our LO and fits nicely in our small vehicle. I feel it provides the best safety compared to other brands I have checked out.

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Excellent product.

By Ernietw

from Bradford, Bradford West Gwillimbury, ON, Canada

Comments about Diono Radian RXT Convertible Car Seat - Daytona:

We love this car seat! Very comfortable and compact. Ideal for our application of fitting three children in the backseat of our Jetta. Lots of great features that we're still learning and will have need of as the years go on!

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Love the Radian RXT

By Tina

from Windsor, ON, Canada

Comments about Diono Radian RXT Convertible Car Seat - Daytona:

Loved it so much, I bought 2! Well built and sturdy! Easy to take in and out of the car. Installation is a breeze and the material easy to clean. I have a Nissan Rogue and it fits perfectly in the back seat...enough room in between for me to sit if need be. The slim design makes it easy to load and unload your child in the car. I am a very happy customer....and promoter of this product!

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Amazing seat

By And21

from Edmonton, AB, Canada

Comments about Diono Radian RXT Convertible Car Seat - Daytona:

This is by far my favorite car seat. It is very comfortable and my little one loves it.

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Super !

By MorgothMD

from G5Z0A9

Comments about Diono Radian RXT Convertible Car Seat - Daytona:

Très solide, demeure ajusté. Pas besoin de toujours resserrer les attaches !

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