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Diono Radian R120 Convertible Car Seat - Daytona

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Diono Radian R120 Convertible Car Seat - Daytona - Diono  - Babies"R"Us
Diono Radian R120 Convertible Car Seat - Daytona - Diono  - Babies"R"Us
Diono Radian R120 Convertible Car Seat - Daytona - Diono  - Babies"R"Us
  • $247.99
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Thanks to a versatile design, the Diono RadianR120 Birth to Booster Car Seat could be the only car seat you'll ever need. With its adjustable features, this seat can safely accommodate children from birth until they have grown up to 120 pounds and 57 inches tall. The RadianR120 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, and a five-point harness 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
  • 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
  • Approved for use on airplanes
  • Infant support cushions keep your baby positioned correctly
  • 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

RadianR120 Daytona Birth to Booster Car Seat, one cup holder, rear-facing base, infant support cushions, SafeStop harness, rear-facing tether connector strap, 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:

RadianR120 Convertible plus Booster Car Seat (Daytona) Product Image


Steel Alloy Frame

Steel Alloy Frame and EPS Foam for Protection

The RadianR120 features a steel alloy frame for a strong foundation. Aluminum reinforced side walls 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 RadianR120 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 RadianR120 offers the adaptability you need to keep your child's car rides safe and comfortable for years. From birth to booster, the RadianR120 fits children in the rear-facing position from 5 to 45 pounds and children in the forward-facing position from 20 to 80 pounds.

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 RadianR120 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 Radian120'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 RadianR120. 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 RadianR120 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 R120 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 RadianR120 Birth to Booster Car Seat is backed by a manufacturer's limited one-year warranty.

Product Description

The Diono RadianR120 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. Built for strength and safety, the RadianR120 has a steel alloy frame, reinforced sidewalls, SafeStop energy absorbing harness, thick, EPS foam panels for side impact protection and our unique SuperLATCH system for easy installation. The RadianR120 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 RadianR120 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 RadianR120 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

29.9 pounds

24.7 x 13.2 x 6.5

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 R120 Convertible Car Seat - Daytona

(based on 12 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



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  • 1 Stars




of respondents would recommend this to a friend.

Reviewed by 12 customers

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By Sunshine

from Edmonton, AB, Canada

Comments about Diono Radian R120 Convertible Car Seat - Daytona:

We bought a couple of these. less than 6 months later we rolled our van, and both our kids were scared but completely fine. They were replaced by Diono (though the replacements got lost for several months). We were supposed to get coloured ones on the replacements, but go black ones instead. On the replacements, however, the velcro that attaches the chest buckle has been torn off by our kids within a couple months, so we need to get those replaced. Also, it fits our children (tall) for longer, and can fit 3 across the back seat of our small toyota echo.

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Very safe & fits well three across

By Amy29

from Minneapolis, MN, United States

Comments about Diono Radian R120 Convertible Car Seat - Daytona:

I bought this a month ago & am glad I did, this seat is very sturdy & will last a long time. I bought this as I have 3 kids under 5. My 4.5 year old sits in the diono r100 5 point harness booster, the 1 month old baby is in the middle in a chicco key fit 30 infant seat with base, and my 19 month old is in this diono r120 rear facing. All 3 seats fit across the rear seats of my subaru outback. I highly recommend the diono r120.

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(1 of 1 customers found this review helpful)


Best and safest car seat

By MontrealKid

from Montreal

Comments about Diono Radian R120 Convertible Car Seat - Daytona:

Got this model as a replacement for my other car seat which was shredding its tightening strap. This seat feels very solid and I trust it more than any other seat I have seen or used. The kids are very comfortable. The straps are large and do not dig into the child’s shoulders. The wings are useless, my kids fall asleep all the time and their heads stay put. The straps are also very easy to tighten and loosen. I bought a second one for my second child. No regrets. I no longer trust any other car seats for the safety of my children.

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Fits Our Needs

By RorasMommy

from NS, Canada

Comments about Diono Radian R120 Convertible Car Seat - Daytona:

This seat was just what we were looking for. My daughter should be able to rear face comfortably until she turns 4. She is so much safer that way. The low sides give her the option to rest her legs over the edges. It has lots of leg room for rear facing compared to some other brand options. Easy to get a tight install. Easy to adjust strap height. Ratcheting harness adjuster is a bit of a pain but definitely workable. Straps are comfortable with or without the strap covers. Cup holder does not stay in place well. It would be improved if it had more of a "click" when pushed in. Seat is very heavy. I would not want to move this seat frequently. If you only move your seat on occasion it isn't bad. The closed belt path would be tricky to put the belt through if you had larger hands but I have heard of people tipping the seat to the side and dropping the belt through. I wish I had known more when I originally bought my daughter her convertible car seat that she outgrew rear facing by height before 2 years. I could have saved myself some money buy buying this one first. Many seats on the market advertise high weight limits but neglect to tell you upfront how short their height limits are. The Radian has generous weight and height limits.

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(3 of 3 customers found this review helpful)


We bought this carseat ...

By pinksnow

from Quebec, Canada

Comments about Diono Radian R120 Convertible Car Seat - Daytona:

We bought this carseat for our 10 month old. My husband and I are both quite tall and managed to fit the seat rear-facing in the middle backseat of my Elantra without the angle adjuster, it's a tight fit, but as soon as we can use the angle adjuster it will give us quite a lot more room! We can easily fit other carseats and boosters on either side of the seat for any visiting and future children. The ease of the latch system also gets a thumbs up! The only thing that is difficult is that it is quite heavy making it hard to move from one car to the next.

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Built strong!

By kimmer

from White Salmon, WA, United States

Comments about Diono Radian R120 Convertible Car Seat - Daytona:

I have been using this seat for my 4 year old since September and I absolutely love it! It is made so well and I feel that she is very safe and secure when she is in it! It is easy to install and easy to put the belts on. She enjoys having a cup holder as well. I am ready to purchase another for our 10 month old. Thanks DIONO for building something super safe for the most important cargo in our lives!

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(1 of 1 customers found this review helpful)


Great for my super-tall baby

By cw722

from Milton, FL

Comments about Diono Radian R120 Convertible Car Seat - Daytona:

I bought this when my son outgrew his bucket seat, but in retrospect, I wish I had just bought this to begin with. My son has been in the 99th height percentile since birth basically, so he outgrew his bucket seat in record time and I wanted to replace it with a seat he could continue to use rear-facing and then later as a booster. This seat as been perfect. Some people complain about the strap-tightening mechanism, but honestly, I prefer it BECAUSE it ratchets and so it is prevented from getting too tight too quickly. The only 'bad' thing I have to say about this seat is that the cup holder is kind of dumb and doesn't really "snap" in or anything, it just kind of hangs there awkwardly. We don't use it.

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Convenient and safe

By Whome

from California, United States

Comments about Diono Radian R120 Convertible Car Seat - Daytona:

We have 3 kids and needed to find something safe and usuable by any of the kids. Convenient to fit 3 across

Comment on this review

(1 of 1 customers found this review helpful)


Love this carseat!

By azmom

from Arizona, United States

Comments about Diono Radian R120 Convertible Car Seat - Daytona:

We bought one a year ago for our older son and we love everything about this car seat . The kids love them and never complain about getting in their car seats. The slim profile works great in our crossover vehicle. We feel like our kids are comfortable and secure.

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Great carseat!

By csproul

from PA, United States

Comments about Diono Radian R120 Convertible Car Seat - Daytona:

We purchased the Diono about 4 months ago and love it. My son is only 2.5 and about 30 lbs and fits nicely in it forward facing. It is super slim and SUPER sturdy. After installing, if you try to jiggle it, it goes nowhere! It's awesome like that. I can't say how easy or difficult installation is as our car makes it difficult for any seat. The only negative I have is that the pieces that snap into the buckle fall down so when you put the child in the seat, you have to dig next to them to find the buckle piece. This is common with many carseats though -- we were just lucky enough not to have to deal with that on our last one.

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