The Diono Radian 3R is the original slim-fit 3 across All-in-One convertible car seat, designed to protect from baby to booster seat (5 – 120 lb). Lovingly engineered with the famous Diono steel reinforced frame and now rear facing for even longer, expect 10 years of safety from just one car seat. Designed and engineered with complete rear facing protection, so you can keep them in a safe rear facing convertible car seat for longer up to 50 lb. Built with a mechanically engineered, reinforced steel frame, made from automotive grade high strength steel, the radian is always ready to shield and protect. And when your family grows, the slim-fit design will fit 3 across in most vehicles without compromising child safety or passenger comfort. Our SuperLATCH system (UAS Compatible) makes installation easy and super secure. As travel car seat experts, Diono have naturally built in super portable and convenient features to the Radian 3R with original fold for easy transport and storage and easy remove machine washable covers. The radian is also aircraft certified (FAA approved), so you can take safety with you wherever you go.
10 Years One Car Seat – from Birth to Booster (5 – 120 lb) it’s all you will need. Grows with your child, ultimate protection on every road trip. 4 modes in 1 seat!
Rear Facing for Longer – lovingly engineered to keep your child rear-facing up to 50 lb.
Fits 3-Across – our famous slim-fit design with zero compromises to safety, space, or comfort.
Mechanically engineered from reinforced automotive grade high-strength steel, our unique core shell shields and protects your child.
High-quality ComfortPlus Memory Foam, always included.
The original and only all-in-one convertible car seat that folds for travel or compact storage. FAA approved for airline use.
Amazon Essentials Boys and Toddlers' T-Shirt and Shorts Set
Original price was: $14.99.$14.90Current price is: $14.90.
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Diono Radian 3R, 3-in-1 Convertible Car Seat, Rear Facing & Forward Facing, 10 Years 1 Car Seat, Slim Fit 3 Across, Pink Blossom
Original price was: $299.99.$199.99Current price is: $199.99.
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CAAmazoner –
Excellent safety features for a tall 7-year old boy. Almost the only model on the market that fits.
I would give this 4.5 stars if I could. It is one of the only seats that will fit my tall 7-year old boy that has a multi-point harness. It also has enhanced support for the head and neck (again, one of the only such models on the market that will fit a tall 7-year old).I say 4.5 instead of 5 because at least in a Tesla Model Y, it is impossible to get this seat 100% tight and immobile. That’s a bit annoying and different from the baby / toddler seat I had before. However, compared to the standard issue “booster seat” that my boy could legally use, I am convinced that this provides much better protection even with a bit of “wiggle.”
Darlene –
Safe, affordable, & comfort all in one!!!
Great car seat! Itâs sturdy & very sheik I love the easy cleaning fabric it has, it is very heavy which makes me feel like my baby is safe in it! Itâs got adjustable shoulder straps & head rest adjustments as well so it can grow with your baby. The seat part also has side adjustments so it can be narrow or wider which is a neat feature! I wonât be using it for travel but it folds up and could be easy to transport if you can carry the heavy weight of it. For the price of this car seat it was a steal!!! We spent double on a Gracie brand before and i feel this car seat is much safer, itâs also roll over tested which is great because not many car seats have that. I will say the cup holders are terrible they fall out very easily but I rather my kid be safe than have a cup holder!!! I was able to fit 2 of these car seats in with a Doona in my Ford Escape 2018 which was suppose to be impossible but the fact of how compact it is made it possible, my boys also say itâs very comfortable which is a huge bonus! Definitely a must buy car seat!!!
Katelyn plants –
3 in a row with infant seat
I have a 2022 kia Sorrento and Iâm about to be a mom of 3under 4 and I really wanted all my kids in the middle row but I was able to with the Graco slim fits and the infant car seat as while but it fits great with a little room to spare to!
sara s –
Slimmest carseat out there!
Able to fit 2 dionos and a doona into my toyota corolla. Only carseat with such a slimfit design. Not the most comfortable headrest but the slim design is worth it.
Mason –
Perfect for multiple kids in a smaller vehicle
Easy to install, fits 3 across in our mid-size suv, very comfortable for long rides for our kids, a little on the heavy side but that comes with a durable car seat. Colors are what we ordered. Easy to clean. Easy to adjust straps.
Julia –
Sleek look
Car seat is very heavy. Simple to install looks sleek in the car it says convenient for travel but with how heavy it is I donât agree at all. I couldnât imagine traveling with this!
Brendan Harris –
Fits in small cars.
Amazing car seats! Fit 3 in an Elantra! High quality
olivia robert –
Very very sturdy and strong probably one of the best on the market
Love the seats after having a car accident we decided to go for a much stronger and sturdier seat and this came in at top of the list they fold nice and flat for traveling on planes and things but just be prepared they are very very very heavy so would be hard to carry around a airport with child in arms also a little hard to instal but well worth it in the end love all the cool colors u can also choose from
L. Toussaint –
Ocupas ser un Ingeniero Aeronautico o automotriz para Instalarlo. Es demasiado Dificil su instalación. Pero brinda buena protección al BB
Laura –
Great chair struggled to get a chair with a 5 point harness for my 5year old who can’t use a normal seatbelt.
Amazon Customer –
It’s a wonderful carseat and is definitely more narrow than other seats. Granddaughter loves it’s and was so happy she could choose the color. The color is beautiful and vibrant.
Amazon Customer –
We bought these specifically for their narrow size for aeroplane travel with our kids (3, 5).They fold nicely and can sit on top of your luggage. We used a small crank tie to attach it to our carryon as it is awkward and a bit heavy to carry on a long walk through an airport terminal.But it fits nicely in aeroplane seats, they are very quick and easy to install in both cars and planes. The pull strap to secure your child is a lot easier to use than other car seats we have used.These are a bit pricey, but are absolutely worth the cost.
Jessica S. –
I bought this car seat looking for a slim design that would fit in the backseat of a 1/4 ton truck with a tight backseat. This fits well and is a great size for my 3-year old daughter. Weâve been using it for a couple weeks and after install I have no complaints.Only reason Iâm giving it a 4 is that is was a little tricky to get it tight enough on install. I watched several videos and could not get it tight enough using the latch straps. However using the other option of securing with the seatbelt was easier and is very secure.