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Diono
Diono Radian 3R, 3-in-1 Convertible Car Seat, Rear Facing & Forward Facing, 10 Years 1 Car Seat, Slim Fit 3 Across, Jet Black Radian 3R Fits 3 Across Black Jet
4.6
Based on 7,990 reviewsReal-World Testing
30 days of real-world testing
Recently Updated
Updated Nov 17, 2025
Technical Specifications
Complete product details
- Product Dimensions
- 16.1 x 16.9 x 28.4 inches
- Item model number
- 50620
- Is Discontinued By Manufacturer
- No
- Minimum weight recommendation
- 5 Pounds
- Maximum weight recommendation
- 120 Pounds
- Minimum height recommendation
- 18.1 Inches
- Maximum height recommendation
- 57 Inches
- Material Type
- Alloy Steel, Plastic, Polypropylene, Polystyrene
- Material Composition
- 90% Polyester, 10% Spandex
- Care instructions
- Covers: Machine wash cold, line dry. Shell and Components: Spot clean
- Additional product features
- Fits 3 Across
- Number Of Items
- 1
- Style
- Radian 3R Fits 3 Across
- Number of reclining positions
- 1
- Batteries required
- No
- Orientation
- Convertible Seat
- Rear-facing minimum child weight
- 5 Pounds
- Rear-facing maximum child weight
- 50 Pounds
- Forward-facing minimum child weight
- 22 Pounds
- Forward-facing maximum child weight
- 120 Pounds
- Harness type
- 5-Point
- Item Weight
- 23 pounds
- ASIN
- B083F5P7VP
- Customer Reviews
- 4.6 4.6 out of 5 stars 7,990 ratings 4.6 out of 5 stars
- Best Sellers Rank
- #3,048 in Baby (See Top 100 in Baby) #13 in Convertible Child Safety Car Seats
- Brand
- Diono
- Installation Type
- Latch
- Material
- Alloy Steel, Plastic, Polypropylene, Polystyrene
- Color
- Black Jet
- Orientation
- Convertible Seat
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About the Author
Expert analysis by Naomi Vance
Naomi Vance
Expert ReviewerSenior Editor
Naomi leads family gear coverage at Review Atlas, prioritizing safety certifications, ease of cleaning, and setup sanity. She runs stroller and carrier obstacle courses, then checks long‑term durability with real families. Her guides help new parents build a sensible registry without the overwhelm.
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View Full ProfileHow We Tested This Product
Our rigorous, independent testing process
Testing Period
30 days
Tested By
Naomi Vance
Our Testing Process
- We purchase all products at full retail price to ensure unbiased testing
- Products are tested in real-world conditions matching everyday use
- Our experts conduct both objective measurements and subjective evaluations
- Reviews are regularly updated as new products enter the market
- Tested according to our Baby & Child Health Care Products testing methodology
Last updated: November 17, 2025
|Independently tested and reviewed