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

This item is discontinued.

5-50 lbs

20-120 LBS


28.5 H x 18.5 W x 16 D

Cup holder

Full steel frame and aluminum reinforced sides for unmatched safety.

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

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

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
Product Reviews
out of 5.0
16 Reviews
Ratings Snapshot
of Reviewers
Alliance, Nebraska
Verified Buyer
Our second Diono
August 16, 2020
Got the same seat for our firstborn. We love it!
and most important, he loves it.
Edmond, Oklahoma
Verified Buyer
Perfect for all ages!
February 24, 2020
This is the second Diono we have purchased and we just love it. I feel like my babies are so secure in these seats.
Verified Buyer
room for improvement
December 1, 2019
The Ranier has lost its greatest draw, namely the 90lb harnessed weight limit, which is probably why they are discontinuing this model. Without this, there is little draw above the Radian aside from the 50lb rearfacing weight limit, though with a 44" rearfacing height limit, it seems unlikely this will be useful. Without the original high Superlatch weight limit and the high forward facing limit, Diono needs to step up their game and get with the times. Their seats are bulky, they need major adjustments and careful reading of the manual for every adjustment, and it's easy to lose the pieces if you're using for more than one child. If you need to deal with customer service, they're actually quite good, but be prepared for it to take months and many calls before you actually get a hold of someone and get anything taken care of.
Atlanta, GA
Verified Buyer
Great purchase
November 15, 2018
Fairly easy to install (no more difficult than the 2 other brands I've installed). My daughter loves it. It is very tall, which is why we bought it, but I don't believe it's meant for cars. We have a 3rd row SUV, and from the middle seat of the middle row it touches both the driver and passenger seats. This might be an issue if you or your spouse are really tall, but my 6' 1" spouse still has enough leg room.
Verified Buyer
Best seat everr
October 14, 2018
I love this seat so much. My husband and I are so impressed with the quality! We have a Britax Marathon, (two kids under two) which is also a great convertible seat, but Diono Ranier blows it out the water. Aside from the safety ratings and high quality construction, we specifically love the way you tighten the belts. It ratchets, which I don’t remember reading about in the specs, but I think is worth mentioning. Getting the right fit with our Marathon is a back and forth game of tightening and loosening...but with the Rainier, it ratchets tighter and tighter and stops at the perfect spot. I swear it’s magic. Since I only have our Marathon to compare to, this is a huge help when getting kids in and out safely and efficiently EVERY TIME. Also to mention, we have a Honda CR-V. The Rainier fits snug (rear facing) behind the passenger seat. It would probably fit better in the center, but we have an infant in the other seat, so we prefer that they are separated. That being said, the passenger seat is set far up, however this is ok for our family for the time being until my toddler is forward facing (hopefully never lol) splurge the money on this seat, you won’t regret it.
Customer Images
  • Ratchet tightening
  • Soft memory foam on belts and seat
  • High Quality construction
Best Uses
  • In a car with ample space for rear-facing
  • Cars with multiple car seats
  • Great for taller, larger kids.
  • Heavy (don?t recommended moving it once installed)
  • Might not fit in smaller vehicles while rear-facing.
Verified Buyer
My favorite seat!
June 1, 2018
I have used several brands & types of car seats but the Rainier is my favorite. I love the Shadow fabric because it's so much cooler. I also like how easy it is to get kids in & out of quickly.
Haddam Neck, CT
Verified Buyer
This was a gift
May 13, 2018
This was a gift for our grandsons 1st birthday. His parents had done the research and asked for this specific car seat. Ordering shipping and delivery was all very easy and quick!!
Los Angeles CA
Verified Buyer
Great carseat
May 9, 2018
I wish I had bought this instead of a convertible. We have two of those already for my older son, and I just ordered another one for my daughter to put in my car, as the convertible was getting a little uncomfortable for her. This car seat ranks very high for safety, and it will likely be the only seat you ever need, since it goes up to 120 lbs
Verified Buyer
Sturdy, sleek but heavy
March 30, 2018
I've purchased six or seven of these seats for myself or family and it's the only convertible car seat we've ever owned as a collective because of its strength, slim design, ease of putting child in, lifespan and allowable rear facing weight. But it is super heavy and hard to install the first time (I'm a pro at it now). It's also pricey.
Verified Buyer
Great car seat
March 21, 2018
Love this seat. My only negative comment is that they changed the chest clip (it is now like the Britax chest clip), which is fine, but I preferred the chest clip on the Raniers that I bought about 4 years ago.
Verified Buyer
Love the upgrades
February 22, 2018
I was initially bummed that the older version the Rainier was discontinued because I had wanted to get my second child the same seat as my first. Well I now wish I could sell the old one and buy a second new one because the updated Rainier is so nice. The materials for the seat cushions, inserts, harness straps and cushions, etc. is amazing. It feels so snug and secure buckling my baby into this seat, while being soft and cozy at the same time. Love it.
Waukesha, wisconsin
Verified Buyer
September 9, 2017
This car seat is amazing. The Rainier is definitely a solid car seat (super heavy) but I think this is part of the reason I like it so much, I know my boys are safe. It is easy for me to take my son in and out of the seat, but difficult for him because the lower strap is positioned fairly low that he can't easily reach it. The fabric is easy to clean & doesn't pill like our previous car seat fabric. We currently have our son forward facing in this seat, and not a complain from him or me. It was super easy to install. Overall I'm impressed!
Verified Buyer
Awesome car seat
September 2, 2017
Fits my kid very well and takes up so much less space than previous one
Lucy K.
St. Charles, MO
Verified Buyer
Fast delivery!
August 19, 2017
I already fell in love with this car seat for its size (able to fit 3full car seats in the backseat!), comfort, and rear and forward-facing capacities (child can use this seat from newborn till they no longer need a seat!). This is the cheapest I have found online with very fast delivery. So pleased!
Emanuel C.
Houston, Texas
Verified Buyer
A must for your precious baby
August 10, 2017
This seat is amazing and my kids love them!
  • Grows with each stage of your child
  • Easy to install and put together
  • Comfortable
  • Sturdy
San Antonio, Texas
Fit 3 across very well
July 15, 2017
Read the instructions then I went on YouTube to watch a tutorial. Installed rear facing very easily. Definitely a lot more room than my other carseat.
  • Smaller
  • Easier to clean
  • Heavy
  • Alot of intial setup
Customer Q&A