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Diono Radian 3R Latch All-in-One Convertible Car Seat and Booster · Gray Slate

ID #5993700
Color: Gray Slate
Currently out of stock
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The Curated Take

Kathleen Sarb, Baby Expert
By the Expert Community

Best for families needing to fit multiple car seats due to its slim design and easy-to-clean fabric.

Great for
  • Ease of cleaningFabric is really easy to wipe clean or wash.
  • Setup easeInstall is very easy and straightforward.
Good for
  • AestheticsSlim design fits multiple car seats across.
  • Ease of useEasy and straightforward to install.
  • DesignSlim design, but heavy due to steel frame.
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Radian® 3R is the original 3 across All-in-One convertible car seat. Now rear-facing even longer (up to 22.7 kg / 50 lb) and suitable from birth to 54 kg / 120 lb, expect 10 years of safety from just one car seat.


  • REAR-FACING FOR LONGER - Designed and engineered to keep your child rear facing even longer up to 22. 7 kg / 50 lb approx. 4 years old.
  • HIGH BACK BOOSTER - Keep your child safe and comfortable with the high back booster seat mode now up to 54 kg / 120 lb.
  • 10 YEARS ONE CAR SEAT - With 4 ways to travel from birth to booster, the radian 3R adapts as your child grows to offer a custom fit from birth up to 54 kg / 120 lb.
  • THE ORIGINAL RADIAN® 3 ACROSS: Built with our famous Radian® slim fit convertible design for a 3-across option only with Diono Radian® combinations, without compromising child or passenger comfort. Feel safe having your children secure in the backseat.
  • STEEL CORE - Mechanically engineered, reinforced steel core, made from automotive grade high strength steel to shield and protect.
Alex K., Baby Expert
Tara M, Baby Expert
Have a question?
4.98 average rating

Product dimensions16 in. L x 17 in. W x 28.5 in. H
ColorGray Slate
Head rest positions1
Installation TypeRigid Latch System
Product weight25.9 lbs
Set IncludesRemovable Infant Insert
TSA ApprovedYES
Model year2020
Recommended Age RangeFrom newborn up to 10 years
Child Maximum Weight (Forward Facing)65 lbs
Child Maximum Weight (Booster)120 lbs
Child Maximum Weight (Rear Facing)50 lbs
Child Maximum Height (Forward Facing)57 in.
Child Maximum Height (Rear Facing)57 in.
Child Minimum Weight (Rear Facing)5 lbs
Child Minimum Weight (Booster)40 lbs
Child Minimum Weight (Forward Facing)22 lbs
Child Minimum Height (Forward Facing)24 in.
Care instruction‎Covers: Machine wash cold, line dry. Shell and Components: Spot clean
Height rangeUp to 57.1 in.
Recline positions1
Weight Range5 to 120 lbs

Kathleen Sarb owns this product
This car seat is perfect for a growing family that needs to fit multiple car seats across. This model comfortably fits three car seats across in my Ford Escape. The fabric is really easy to wipe clean or wash. Install is very easy and straight forward. Car seat is relatively heavy due to the steel frame, but very durable.
Ideal for
  • Slim design
  • Grows well with child
  • Fabric easy to clean
Not ideal for
  • Heavy due to the steel frame
  • Not as comfortable for little sleeping babies
Reviewed by:
Kathleen Sarb
Baby Expert

Free shippingFree standard shipping for most items over $50 in the lower 48 states - $34.95 to ship orders to Alaska, and $39.95 to ship orders to Hawaii. Expedited delivery, if available, is an additional charge available at checkout. We do not ship internationally at this time.
Easy returnsWe offer a 30-day peace of mind returns on most items in new condition that are in their original packaging. Items purchased used are not eligible to be returned. Read our return policy for more detail





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