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Diono Rainier All-In-One Convertible Car Seat - Midnight

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Rear-facing Capacity: 5-50 lbs
Forward-facing Capacity: 20-120 lbs
Seat Weight: 28.4 lbs
Seat Dimensions:28.5 H x 18.5 W x 16 D

What's Included: Cup holder


Steel Frame

Full steel frame and aluminum reinforced sides for unmatched safety.

Space Saving Design

Space saving design allows extra room for passengers while providing spacious interior for child.

Fold & Go

Folds flat for storage and travel - it's even FAA certified! Optional carry straps (sold separately) make it even easier to take along.

Machine Washable

The machine-washable and dryer-safe seat cover helps keep your seat looking new and fresh.

Get top-tier safety and streamlined design with the Rainier convertible car seat. The full steel frame, extra-deep aluminum reinforced sides, and energy absorbing foam deliver unmatched protection for your little one. The rainier accommodates children weighing 5-120 pounds. It could be the only car seat you’ll ever need.

Diono convertible car seats are made from steel for safety you can feel. The fully integrated steel frame is wrapped in thick engineered plastic to withstand severe crash forces. Deep, aluminum reinforced sidewalls provide excellent side impact protection, while energy absorbing EPS foam surrounds your child for ultimate safety. Diono car seats are definitely worth the weight.

The rainier keeps children comfortably rear-facing from 5-50 pounds for the safest possible position. Body support cushions are included to keep newborns and infants comfortable and positioned properly.

Rainier accommodates forward-facing children up to 65 pounds in a 5-point harness and converts to booster mode for kids 50-120 pounds. The aluminum reinforced, adjustable head rest and extra-deep sidewalls provide the ultimate side impact protection.

  • Premium, plush interlock knit fabric
  • Full steel frame for unmatched safety
  • 12-position aluminum reinforced adjustable headrest
  • Extra-deep sidewalls lined with energy absorbing EPS foam for superior side impact protection
  • Comfortably seats rear-facing children from 5-50 pounds
  • Forward-facing capacity in a 5-point harness: from 20-65 pounds and up to 57″ in height
  • Converts to a booster for children from 50 pounds up to 120 pounds, and up to 57″ tall – proper fit in booster mode
  • Safe Stop® energy absorbing harness
  • Unique SuperLATCH™ system makes installation easy
  • Sleek design allows extra room for other passengers while providing spacious interior for child
  • Infant body support cushions and memory foam add comfort
  • Expandable sides and long seat bottom offer proper leg support
  • 5 shoulder and 3 buckle positions adjust for a comfortable ride
  • Rear-facing tether capability
  • Angled cup holder keeps drinks upright and within easy reach
  • Folds flat for travel and is FAA certified
  • Cover is machine washable
  • Rubber bottom grips for no-slip installation
  • 10 year life from the date of purchase

Review Summary
302 Reviews
73% (221)
18% (55)
5% (14)
1% (3)
3% (9)
94% Recommend this product (283 of 302 responses)
By Diana
Alliance, Nebraska
We love it!
August 16, 2020
I've had this car seat for 4 years now. At first, I thought it was a pain to move the seat from my car to the husband's truck because it is heavy but the more we did it the easier it got. We did have to purchase a new cover for it because my 3-year-old at the time was potty training and had an accident and when I tried to wash it by hand in the tub, the smell still did not come out. Now, 2020 we still have the same cover and seat, even bought a waterproof seat protector. The only thing I kinda don't like is that when he does take naps on long road trips his head will hang forward. Other than that we love it!!
By Atanas
Malden, MA
Great car seat.
February 6, 2020
We are very happy with this car seat and have been using it for the last 2 years. The only thing I don't like is that it doesn't recline in its forward facing position and that makes sleeping in it uncomfartable. Although my son never complained and it doesn't stop him from falling asleep in the car seat. We will be purchasing the same car seat but the current model for our daughter soon.
By Courtney
Mesa, Az
Love it
November 27, 2019
This car seat is amazing. It’s so cushy and comfortable for our daughter. We bought another one for our son since we like it so much.
  • Rear facing for our 4 1/2 year old
  • Heavy
By Abbye
Georgetown, Kentucky
LOVE this car seat
October 28, 2019
I love this car seat. It's heavy duty. I read a lot about convertibles and we settled on this one due to its frame design and construction, safety rating, and the many, many great reviews.
The colors are great, it's fairly easy to clean, not hard to install (if you watch the videos). Rear facing, you definitely need the foam accessory to go under. It will lean way back and could cause your passenger front seat to have to be moved uncomfortably close to the dash board. The weight limit on rear facing and forward facing is fantastic. We will definitely buy another for a second child.
  • Sturdy, strong. Great safety rating. easy to clean. luxurious feeling fabric and cushions.
  • Can be more complicated to install if you're not good with these kinds of things, Rear facing options requires the additional foam accessory to go under the seat to allow for more room up front. customer service for Diono is a little slow.
By Liz
Jacksonville, Florida
Love the color
July 15, 2019
The pattern and colors are what initially attracted me to this car seat. Upon reading the reviews I was sold. I love that i had ample space in my backseat after installment. The only con I have about this car seat is that it’s a pain to take off to wash the fabric. I don’t even think I was able to put it back on properly after my last wash.
By Melissa
Chepachet, RI
Love this seat
May 21, 2019
I research long and hard before committing to a car seat for my daughter. This seat was perfect. Heavy, safe, easy to install with Extra padding for when she was little with plentry of room to grow. Rear facing until 4 with no concerns. Happy purchase. Would buy again.
By Re
San Marcos, CA
Great investment
May 7, 2019
This car seat is working great so far. It still looks good in condition. Cleans easy. Have traveled with it a few times and makes it easy with the ability to fold up for easy transport.
By Laura
Denver, CO
Amazing car seat!
March 31, 2019
Great quality and well made. We love this seat for our heavy toddler. It kept him rear facing much longer than any other seat would have. I took one star because the seat cover faded in the sun rather quickly but all in all this is an excellent product.
By Janet
Chula Vista, CA
Amazing heavy duty narrow carseat
February 2, 2019
Very strong and heavy duty. The steel frame is amazing. Great narrow seat.
  • Lasts for 10 years. Super comfortable.
  • Heavy. Not easy to install.
Best UsesNarrow cars
By Grania
Lebanon, NH
Love it!
November 1, 2018
This car seat is sturdy and well made. It fits narrow, no arm rest on two sides, so very easy for my 2 years to get in by herself. It's apparently very comfortable too, because my 2 year old loves riding in it. The sale price was pretty good too!
By Whatley711
Hallsville, Texas
Absolutely Love!!
October 16, 2018
I love the Diono Radaint RXT! Love the quality of the car seats and the ease of putting it in and converting it! So easy to clean also... first day of use my child had a stomach virus; needless to say it came right off and I was able to throw it right in the washer!! Looking forward to purchasing another one for baby #2!!
* This product review was collected by the manufacturer.
By Kal
Moscow Idaho
So glad I finally made this purchase!!!
July 7, 2018
I was skeptical at first. I read at least 50+ reviews which were mostly positive. My Dr highly recommended this car seat for safety and longevity so I gave it a try.
  • -Very sturdy and safe.
  • -Very comfortable.
  • -5 point harness easily unclipped with one finger.
  • -Cup holder included and option to add more.
  • -Additional Padding for any fit. Padding for shoulders and chest. Padding to keep lower clip from rubbing. Padding behind head. Padding under back and butt!!
  • -Easy clip system in rear and front of car seat for even more security and stability.
  • -Comes with padding under car seat (sold separately) to help make room and keep from damaging seat.
  • -Arrived in under 5 business days.
  • -Allows rear facing kids up to 44? whereas most are only 30?.
  • -Initial set up takes about 20 minutes to get a good fit for your child but after that it took me maybe 5 minutes to transfer to truck from suv.
  • -It is $314 normally but I found it here on sale for $259!
  • - I wish it had a sun hood.
Best UsesRear facing, front facing and booster up to 120lbs.
By Maria
Never been happier!
June 29, 2018
I never have to buy another car seat again. It's so comfortable my baby keeps falling asleep which is a plus. I installed with the adjuster in my small versa note hatchback and my husband 6'1 is still able to recline his seat as much as he needs. It was here on time with no issues. I will make another purchase if needed from this site!
  • Fast shipping. Very well packaged.
  • Very heavy but excepted for a steal car seat.
Best UsesUse with Diono Adjuster for more recline room in car.
By Linh
Garland, Texas
favorite car seat
May 3, 2018
so heavy duty and safe. the only thing is that it's super heavy, def not for moving from one car to another.
By Kylee
Tampa, Fl
May 3, 2018
If you're considering this car seat, buy it! We've been through the Graco forever, Chicco Nexfit, and Maxi Cosi Pria 85 Max. Graco was fine, but not a comfy seat. Chicco was nice and plush, but a pain to get our kiddo in and out of (he's really tall) and Maxi Cosi didn't tighen properly (we had two). I wish I started with Diono! I was thrown off by its look at first. It looked like a booster, and with a market flooded of car seats, I assumed I was reading something wrong that it fit an infant. Silly me. I love it, my son loves it, and so does my husband. Highly recommend!
  • Comfortable Seat
  • Easy tightening system
  • Tall enough for bigger kids but still safe for tiny ones
  • Folds and offers strap for travel
  • None!
By Mama C.
Lewisville, TX
I followed installation but it seems unsafe for my infant.
May 1, 2018
I started using Diono seats after my two older children's seats expired. My middle child was around 9 months old at the time, my oldest nearly 3.5. Now, a year later, I have purchased an additional Diono seat for my infant. I LOVE these seats for my older children, but the seat does not recline enough for me to feel safe putting my infant into it-he appears to sit chin-to-chest in a seat that is determined to sit upright. I went to 3 different fire stations today to have them check the installation, and they all said that it was installed exactly as the manual describes...but that they too felt it was too far upright for a young baby. I won't be throwing my seat away, but I am upset that I will have to purchase an infant seat until my son will fit into the Diono. He is over 8 1/2lbs and should fit safely into the seat, as per advertisement.
* This product review was collected by the manufacturer.
By Mystiesmommy
Humble tx
Proud owner or the Rainer
February 17, 2018
Best carseat on the market in the US. We have proudly owned our Rainer since 2014. The cover is stained but the carseat in general is just as great as the day we bought it. Its safety features give me such peace of mind on the road.
* This product review was collected by the manufacturer.
By Nelly
Los Angeles, California
Diono Rainier
February 6, 2018
I LOVE this car seat! I purchased it for my 8 month old daughter. I had another brand but they were too bulky, took too much space and my daughter would hate getting in it. The Diono is perfect! My daughter is tall for her age but is super comfortable in the Rainier. No more fighting to get her in her car seat. Just bought a second one for grandma and grandpa's car. :) Knowing she is safe is worth the extra weight. Highly recommended!
  • Child fits comfortably
  • Thin design to fit smaller cars comfortably
  • Safety
  • Pattern is discontinued :(
  • Wish they would have more colors and patterns to choose from.
By Bruce
Jacksonville, Florida
My kids love them!
February 1, 2018
My kids may not like being held still for very long but they never complain about being uncomfortable or that they do not like the car seat. Their rear ends are big fans of this seat. I don't like how heavy and large it is when traveling through an airport but I think my small sacrifice is worth it. The safety, comfort, and longevity of this seat is unbeatable. I have purchased two, 18 months apart and would do it again.
  • Comfort, and safety
  • Weight
By Jessica
Prince Rupert, BC
Only Carseat I would ever use!
January 28, 2018
I have two Diono Rainiers. My son is 3 1/2 and my daughter is 1 1/2. Both sit rear facing. These car seats are worth the money. They are sturdy and incredibly safe. My husband is a Firefighter and has seen car accidents involving children. He and I love our Diono's. We have flown with our car seats many times. They are heavy and can be cumbersome to travel with, but their durable construction is worth the weight. The safety of our children is more important than the weight and price of their carseats.
* This product review was collected by the manufacturer.
By Susan
Lewisburg, PA
Very sturdy.
January 9, 2018
This is a very sturdy seat, the fabric is good my son doesn't seem to get hot sitting in the seat. It is easy to install. The one draw back it you have to remove the seat and reinstall when you need to adjust the height of the harness.
  • Strong and sturdy
  • Must uninstall car seat to adjust harness height.
By Vonda
Raleigh, NC
Doesn't fit anywhere near the 57'
January 4, 2018
Even though it's advertised to accommodate a child up to 57' and/or 65lbs., the upper shoulder strap slots are at 17'. The shoulder straps have to come out at or above the shoulder. This seat won't handle a child over about 45'tall. It was useless to me since I was counting on it to accommodate a child in the 5 point harness for above the normal height. I'm going to have to return it. It's a nice seat, very sturdy and safe feeling, but it isn't able to be used as described. Albee was very prompt, and did their part. This problem is with Diono. They need to be realistic in their height accommodations.
  • It was very sturdy. Heavy. Well padded! Nice color. Albee did their part. This problem is Diono's specifics not being realistic.
  • Won't accommodate a child over about 45', even though it states up to 57'. I do have to pay for return shipping đź¤?
By Desiree
Tucson, AZ
Great seat, my son loves it!
December 29, 2017
Great seat. My son loves it, just took it on a long road tripand my son was able to sleep most of the way with no issues.
  • Very comfortable
  • Easy to install once properly prepared
  • Difficult to read instructions
By Lisa
Seattle, WA
December 20, 2017
This thing is solid! My 23 month old likes it so far. I'm happy that I can keep her rear-facing as long as possible with the limits on this seat. I used the latch system to secure and it seems great so far.
Best UsesSafe long-lasting seat. Bought another for my husband's car.
By Susan M.
Brimfield Ohio
Special needs toddler
December 18, 2017
My special needs grand daughter is now 5. She will need to be in a car booster seat for many years to come. This does not make her look like a baby but a big girl. I searched high and low for one that as her Nanna I could help her get in and out of. I LOVE it! I told my daughter to come to this site and see if you have any more to replace hers.
  • Special needs grand daughter can pull herself forward with ease and slip off the front till her feet touch the floor. Good grabbing sides for her to pull herself into the seat. The release buckle can be undone with ease for Nanna's older hands.
  • When my grand daughter fell asleep her head had no place to rest, (rolled forward), like a car seat that reclines somewhat. But at age 5 that is not what most children need.
By John
Auburn, WA
Great seat - 2nd Purchase
December 18, 2017
Been very happy with this make / model.
By Christine
Chicago, IL
Just what we needed for extended rear-facing
December 11, 2017
We bought this to replace a Britax with a lower rear-facing limit. Our son is close to 35 lbs and over 37 inches tall at 2.5 and we wanted a seat where he could comfortably rear-face for at least another year. With the Rainier's 50 lb limit, we should be good to go. It fits fine behind the driver's seat on our Chevy Equinox, but I could see how it might be a tight fit without the angle adjuster on a smaller car. It's much easier for him to get in and out of by himself, and he seems to have a ton of leg room. It was a little tricky to install using the seat belt, but we managed to get it tight enough after some finagling. I would definitely recommend this seat.
  • 50-pound rear-facing limit
  • Easy for child to climb in and out of
  • Somewhat difficult to install
  • Somewhat difficult to tighten straps
By Marissa
Akron, Ohio
Amazing Seat!
December 8, 2017
This seat is great! Rear faces until 50lbs (which keeps my petite kids rearfacing for quite a while!) and then harnesses until 90lbs, then turns into a booster! Not to mention the amazing saving I got from Albee Baby! I will always shop here from now on for gear!
By Mom t.
I regret getting car sear
October 15, 2017
I originally had the Diono RXT. We switched to the Rainer after a car accident. The wide head wings make it hard to install next to another car seat. The biggest issue is that it's impossible to get the straps tight enough. I have watched several videos and read online tips, and neither myself nor my husband can get it to tighten to the point where we can't pinch the strap on the shoulders. If you can't properly secure your child in the seat it doesn't really matter how expensive the seat was.
* This product review was collected by the manufacturer.
By Allison
Woodstock, Georgia
Amazing Car Seat
September 21, 2017
You can't go wrong with Diono. Their seats are durable and very safe. They are also slim so you can fit multiple car seats in your car. I love the easy fold and carry feature. The colors are great and the seat is comfortable and it is easy for my toddler to get in and out of.
  • Safe, slim, comfortable
  • Heavy
By MamaMack
Saskatchewan, Canada
The ONLY seat I will every own!!!
September 16, 2017
Having an 11 year old I have used many seats in the past. They were garbage! When I had my second child I researched and found the Rainier. Yes it is heavy but that is the steel alloy frame and I am ok with that as it only increases the safety for my child. The seat is easy to put together and install ( I installed 2 in less than 15 minutes in 2 different vehicles). Yes you read that right. I own 2!!! LOVE LOVE LOVE this seat and the ability for extended rear-facing due to the higher weight limits!
* This product review was collected by the manufacturer.
By Cori
Mill Creek, WA
Should of bought it to begin with!
September 1, 2017
I care for my granddaughter daily and bought another carseat brand. It was fine, as she's grown I have found that it had become increasinly diffcult to get her in/out of. Her parents have had the Diono RXT from the begining, I should of bought this from the begining! She looks so much more comfortable, and the ease to help get her in & out is wonderful. We LOVE this carseat and cannot say enough wonderful things about it. We are expecting our second grandchild, planning on purchasing the same Diono for him. Thank You
Castro Valley,CA
Great comfortable car seat
August 27, 2017
very comfortable, my baby loves it and it is easy to install
Nice Car Seat
August 26, 2017
Nice Car Seat
By Janell
Sherman Oaks, CA
Favorite Car Seat
August 24, 2017
Love this fabric! So happy to find a narrow car seat that fits three across!
  • Everything you want in a carsear.
  • Aren't able to adjust the harness as the child grows while car seat is strapped in. Need to completely rethread.
By Tiffany
Slidell, Louisiana
Great car seat
August 21, 2017
We love this car seat, except for the fact that my daughters head ALWAYS falls forward when asleep. We even bought the diono angle adjuster, but it didn't work with our seats. She's still rear facing and would always wake up crying because her neck hurt. Had to put this car seat in our secondary car, and put our maxi cosi pria in our primary car until she faces forward.
  • sturdy frame, baby doesn't overheat in it
  • bad angle when rear facing
By Julie C.
Ardmore, OK
Diono car seat
August 14, 2017
Excellent quality and fast shipping. Thanks
By Mountain L.
Silverdale, WA
I recommend this carseat to Everyone!
August 6, 2017
We actually bought this carseat as a spare for my parents to have. I was really fortunate that this came in to the store I work at as a return (never opened, they just changes their minds) so I took a chance a bought it, despite being thrown by the price. I had read the reviews and they were All phenomenal. Once I got the carseat out of the box to assemble it for transportation, I knew immediately my parents weren't getting this one. The padding in the seat alone is Amazing. The straps are so heavy duty and even the seat harness is padded and super comfy. My daughter sat in it for over an hour in the living room! It's heavy, but that's due to the solid steel frame (BONUS!) And we don't move it much anyways. The anchor attachments are Awesome. No terrible clips! Happy to know Diono is actually based in Seattle (We live across the sound) just in case. Really great product, absolutely blows away the Graco convertible carseat we let my parents have for our daughter instead!
* This product review was collected by the manufacturer.
By angela
millen, GA
great car seat
July 30, 2017
wonderful product. love it . very comfortable for the child.
  • cute
  • no cons
Best Usestoddlers
By Jupiter j.
Clarksville, tn
Love this seat!
July 30, 2017
I own this seat and a clek I love this one for the ability to travel easy. It is cute not gaudy, I was concerned about pattern but it is great. My child falls into a deep sleep in it. Has wiped clean several times this month.
  • Traveling, safe, long lasting, looks good.
  • Large footprint in my small car but fits
Best UsesSafty
Nanaimo, BC
head rest sits too low
July 18, 2017
This is a good product for younger children. I'm a bit concerned about the size of the seat for when my eldest is ready to transition to a booster seat. The head rest is already low for him, his shoulders are almost touching it. As well, the width is starting to get snug - he's not even 4 years old. The seat seems comfortable for him right now. Another concern is that the pull belt, to tighten the harness has started to fray... shouldn't do that.
* This product review was collected by the manufacturer.
By Angela
Lower Burrell, Pennsylvania
best car seat
July 10, 2017
we were recently in a car accident and i was advised to purchase all new car seats. but we currently own this one for our 4 year old and she didn't move an inch. she was so secure and safe. i just purchased 2 of the new models because i will not put my children in anything else after seeing our 7 year old daughter thrown forward in her current booster seat. well worth the money!
  • everything!
  • it is heavy but i would not say that is a con. it is just made extremely well.
By Mom t.
Mason, Ohio
Amazing seat!
June 28, 2017
This is my third seat we have purchased. My two daughters love it! Soft and comfy fabric, impeccable safety ratings, and easy to install! Highly recommend!
  • Easy to install
  • Soft and comfy
  • Breathable fabric
  • Stylish
  • Durable
  • Safe
  • On the heavier side
Best UsesConvertible car seat from infancy to beyond toddler
By Kennedy
Fast and easy
June 18, 2017
Order shipped quickly and arrived as advertised.
By Molly
Cleveland, Ohio
Favorite car seat
June 15, 2017
This is our third diono car seat. Can't go wrong. Love the print.
  • Safe
  • Have to buy the angle adjuster to have room to comfortably install.
By Brandy
Diono carseat
May 24, 2017
First time ordering from albee baby and I had a wonderful experience! Carseat arrived just a cpl days after I purchased it. I will be buying another one from this company soon.
By Norma P.
Batesville AR
Love it.
May 19, 2017
Bought this seat to begin transitioning my 12 week old son into... he's just 16 pounds but I want him to have a safe car seat that would be more comfortable than the seemingly cramped infant carrier/car seat I received as a gift at my shower. I really like this seat. And thankfully so does he! He fits well in it and has fallen asleep in it several times without a problem just as he would the infant seat. His head does fall forward slightly when he sleeps but I don't think it will cause him any strain... the harness padding is so thick that it keeps his head more upright than side-lying. I love the fact it's tethered to the car fame... literally this thing does not budge after being properly installed! (Which was super easy after watching Car Seat Lady's YouTube tutorial) I think the midnight color is fantastic, I love black and the seat is functional and appealing to the eye. I can't wait for him to grow with this seat, I'm proud of my purchase. Feel I made the right decision!
By Julie
Love the print and the price!
May 12, 2017
Order arrived fast. Price was fantastic.
By Sara C.
Great Purchase!!!
May 1, 2017
We like that thus car seat will keep our daughter safe and rear-facing longer than other seats. It seems very comfortable. Only concern to have is it you have a tall driver, this seat does have a pretty far back position for rear-facing or recommend the seat wedge to elevate it.
  • Great head support, easy 5 point harness
  • Rear-facing angle of seat can cause it to not fit in some card properly without the seat wedge sold separately to place under the car seat.
By Amy
Slim Seat
April 13, 2017
We purchased three Dionos to fit three across in my husband's vehicle (cheaper than buying a new car!) The toddlers seem to be very comfortable in theirs, but we haven't used it for our infant yet. You can't beat the prices on Albeebaby!

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