Diono
Radian 3R
Diono Radian 3R is a fixed all-in-one car seat. Families with a specific narrow-shell requirement who can learn its installation details.
Quick Facts
- Rear-facing
- 5–50 lb; up to 44 inches
- Forward-facing harness
- 26.5–65 lb in revised 3R-series guide
- Highback booster
- 40–120 lb; up to 57.1 inches; follow the unit’s complete booster-fit rules
- Seat weight in Black Storm
- 23.4 lb
- Dimensions H × W × D
- 28.4 × 16.9 × 16.1 inches
- Shell
- folding steel-reinforced design
Product details
Our Take
Radian 3R is worth investigating when a narrow shell and a folding design solve a specific vehicle or travel problem. Folding does not make it light, and the low-profile design comes with installation parts and instructions that deserve practice. We would not buy it solely on a three-across promise: seat interaction, front-seat clearance and buckle access are vehicle-specific. Treat later booster use as a fit-dependent option, and keep the manual for the exact manufacturing generation with the seat.
What we like
- Narrow 16.9-inch stated width
- Folds for carrying and storage
- 50 lb rear-facing capacity
Worth knowing
- Heavy despite folding.
- Installation components and revised minimums vary by generation.
Written by googaia based on manufacturer specs and verified third-party reviews.
Everything it does well
- Narrow 16.9-inch stated width
- Folds for carrying and storage
- 50 lb rear-facing capacity
Diono Radian 3R is a fixed all-in-one car seat. Families with a specific narrow-shell requirement who can learn its installation details.
Manufacturer description.
Specifications
The one complete spec list for this product — grouped for scanning.
Growth & Fit
- Forward-facing harness
- 26.5–65 lb in revised 3R-series guide
Everyday Use
- Rear-facing
- 5–50 lb; up to 44 inches
- Highback booster
- 40–120 lb; up to 57.1 inches; follow the unit’s complete booster-fit rules
Size & Weight
- Seat weight in Black Storm
- 23.4 lb
- Dimensions H × W × D
- 28.4 × 16.9 × 16.1 inches
Details
- Shell
- folding steel-reinforced design
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