Diono Radian 3R Car Seat
Diono Radian 3R Car Seat
Hero image 0 of Diono Radian 3R Car Seat, 0 of 9
Diono

Diono Radian 3R Car Seat

Diono Radian 3R Car SeatDiono Radian 3R All in One Convertible Car Seat Slim Fit 3 Across Gray SlateDiono Radian 3R All in One Convertible Car Seat Slim Fit 3 Across Black StormDiono Radian 3R All in One Convertible Car Seat Slim Fit 3 Across Purple WildberryDiono Radian 3R All in One Convertible Car Seat Slim Fit 3 Across Blue SurgeDiono Radian 3R All in One Convertible Car Seat Slim Fit 3 Across Blue Razz IceDiono Radian 3R All in One Convertible Car Seat Slim Fit 3 Across Pink Cotton Candy
Actual ColorGray Slate

Key item features

  • 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.
  • Exclusive Features - With limited colored seats, you will also receive a head support pillow, comfort cushion and 2 XL cup holders. These additions are included only with the following color seats - Black Storm, Blue Surge, Blue Razz Ice, Purple Wildberry and Pink Cotton Candy.
Current price is $197.91$197.91/count
Price when purchased online
  • Free shipping
  • Free 90-day returns
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Customer ratings & reviews

4.6 out of 5 stars
stars
367 ratings135 reviews
How item rating is calculated
  1. 5 stars79% (289)
  2. 4 stars12% (45)
  3. 3 stars3% (11)
  4. 2 stars1% (5)
  5. 1 star5% (17)

Reviews summary

Pros

  • : Fits snugly in various vehicle models.
  • : Made with sturdy materials and well-built design.
  • : Offers lower prices than similar products.
  • : Fits snugly in small vehicles without obstructing space.
  • : Straightforward installation process.

Cons

  • : Manual lacks clear installation guidance.
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Showing 1-3 of 135 reviews

Apr 24, 2026
patricia
Item details
Color: Pink Cotton Candy
Sold and shipped byDiono
5 out of 5 stars review

Verified Purchase

We love this seat! It fits better, less bulky than regular car seats, can be used for a very long time. We have a 5yr old who has long legs, and weighs about 40 lbs and needed a different option than traditional seats have., the child can actually buckle herself in, with parental guidance. Cannot unbuckle without adult doing it. Straps are comfortable. Straps adjustable. Two cup holders that are positional. Easier to get seat buckled in right when placing in the vehicle. The child will be able to use until car seats no longer needed.

Helpful?1NH74XNX1YJ5916540408
Aug 25, 2025
Jess
5 out of 5 stars review

Seller Verified Purchase

Excellent Product

Excellent car seat, slender but with somehow more space for comfort of your child. Their is so much more room in the car, no bulky cup holders, no extra bits to clean.

International review
Review from walmart.ca
Helpful?1NH74XNX1YJ5916540408
Jan 3, 2025
Marie
5 out of 5 stars review

Seller Verified Purchase

Checks all my boxes!

Really good seat. My daughter tends to sleep on long drives and this allows her the comfort to do that. Checks all my boxes on safety, comfort and ease of assembly. I'm certain she'll have this till she transitions out of car seats

International review
Review from walmart.ca
Helpful?1NH74XNX1YJ5916540408