Rainier Convertible & Booster

By Diono

Rainier Convertible & Booster

By Diono


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Availability: Out of Stock, Ships in 2-3 weeks
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This is a final sale item! We do not offer returns or exchanges on this item.

The New Diono Rainier is the ultimate in car seat safety with new extra deep side walls providing complete side impact protection taking Diono car seats to a whole new level. With its extended rear-facing capabilities, it can comfortably seat rear-facing children from 5 to 50 lbs (2.3 – 22.7 kg) and forward-facing children from 22-65 lbs (10 – 29.5 kg) in 5-point harness mode. Additionally it converts to a booster for children between 50 - 120 lbs (23 – 54 kg) or up to 144 cm (57") in height.

The aluminium reinforce headrest has 12 height positions for adjustable head support and additional EPS foam surrounds the child’s head and body for complete side impact protection. The unique SuperLATCH system makes installation easy and the Rainier is NCAP crash tested!

Additional Information

Additional Information

  • Full steel frame and aluminum reinforced sides
  • Reinforced extra deep sidewalls lined with energy-absorbing foam for head and body protection
  • Unique SuperLATCH system that makes installation easy
  • Space saving design allows extra room for passengers
  • Folds flat for travel
  • FAA certified
  • NCAP crash tested
  • Infant body support cushions and memory foam for added comfort
  • Energy absorbing EPS foam and side impact protection provides added safety
  • Extra-long leg support for comfy road trips
  • Multiple harness and buckle positions for custom fit
  • Safestop energy-absorbing harness
  • Additional forward-facing recline position to accommodate different types of contoured vehicle seats
  • 12-position adjustable headrest, 5 shoulder and 3 buckle positions deliver a comfortable ride
  • Rear-facing tether capability
  • UAS installation up to 65 lb (29.5 kg) child
  • Expandable sides and long seat bottom allow proper leg support
  • Sits low on vehicle seat for easy child boarding and improved safety performance in a crash
  • Angled cup holder keeps a variety of drinks upright and within easy reach
  • Cover is machine washable and dryable
  • Rubber bottom grips for no-slip installation

Recommended Usage:

  • Rear-Facing: 5 – 50 lb (2.3 – 22.7 kg)
  • Forward Facing: 22 – 65 lb (10 – 29.5 kg) *In 5 point harness mode
  • Booster Option: 50 -100 lb (23 – 54 kg) or up to 144 cm (57”)


  • Open: 72.4 x 47 x 40.6 cm (28.5 x 18.5 x 16") (H x W x D)
  • Folded: 72.4 x 47 x 25.4 cm (28.5 x 18.5 x 10") (H x W x D)
  • Weight: 28.45 lb (12.93 kg)

 Washing & Care:

  • Hand wash or machine wash only in front loading machine. Line dry or tumble dry on low temperatures

Harness expires 8 years from Date of Purchase. Booster expires 12 years from Date of Purchase.

Customer Reviews 8 Review(s)

1-8 of 77

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Great product!
Very easy to install and comfortable!
Review by Karen / (Posted on 2016-10-22)
Great seat but can't see my blindspot anymore!
Love this car seat. My 1 year old is safe and secure. My only complaint is that you can forget about checking your blindspot when you have the seat rear-facing. The seat comes up so high and completely blocks the window (note: I'm using it with the angle adjuster so maybe this wouldn't happen if I took out the angle adjuster). My car beeps when someone is in my blindspot so I've been OK. It will be no problem when I use it forward facing.
Review by Kristin / (Posted on 2016-10-21)
Love this seat!
We actually purchased while on sale to be a 2nd seat in my husbands truck. Fits great in the truck and also has lots of room for our son and very comfortable. Love that it will also become his booster seat when the time comes.
Review by Jennifer / (Posted on 2016-10-20)
We really love this seat, we had previously bought another brand for the one of our vehicles abd we wish we had two of the diono seats. It is easy putting the baby in because the sides are low and our baby loves that seat. The passenger seat doesn't have too much space left but that is fine with us.
Review by Jessica / (Posted on 2016-10-20)
Amazing car seat!
We love this car seat! It is so sleek and very well padded. I love how it converts to a booster.
Review by Sharen / (Posted on 2016-10-19)
I really feel my kid is safe in this seat, it takes less space than others (it fits on back seat of of a Wrangler JK). I recommend it.
Review by Waterman / (Posted on 2016-10-19)
Great Purchase
Very happy with the car seat. Little one loves it and it seems very sturdy and safe!
Review by Andrew / (Posted on 2016-10-19)
Purchased this for my first baby And love it! Speedy delivery. It's heavy and a little hard to install but seems very comfortable
Review by Wendy / (Posted on 2016-10-19)

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