The original 3 across All-in-One convertible car seat
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Radian® 3R
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.
Features:
- REAR-FACING FOR LONGER - Designed and engineered to keep your child rear facing even longer up to 50 lb / 22.7 kg, approx. 4 years old
- 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 120 lb / 54 kg
- STEEL CORE - Mechanically engineered, reinforced steel core, made from automotive grade high strength steel to shield and protect
- 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
Product Specs
- Minimum User Weight: 5 lb / 2.3 kg
- Maximum User Weight: 120 lb / 54 kg
- Minimum User Weight - Rear Facing: 5 lb / 2.3 kg
- Maximum User Weight - Rear Facing: 50 lb / 22.7 kg
- Maximum User Weight - Rear Facing LATCH: 35 lb / 15.8 kg
- Minimum User Weight - Forward Facing: 22 lb / 10 kg
- Maximum User Weight - Forward Facing: 65 lb / 29.5 kg
- Maximum User Weight - Forward Facing LATCH: 40 lb / 18 kg
- Minimum User Weight - Booster: 40 lb / 18 kg
- Maximum User Weight - Booster: 120 lb / 54 kg
- Maximum User Height: 57.1 in / 145 cm
- Product Height: 28.5 in / 72.4 cm
- Product Width: 17 in / 43.2 cm
- Product Depth: 16 in / 40.6 cm
- Seat Weight: 25.9 lb / 11.74 kg
Care & Maintenance
Covers: Machine wash cold, line dry. Shell and Components: Spot clean
Warranty Information
12 month standard warranty available to each customer. Customers must complete the online product registration form within 30 days of purchase. An extended warranty is available to Lifetime Journey Care subscribers.
The Diono Difference
The Radian® R series features a unique combination of diono car seat engineering and rigorous testing.
Built with our famous Radian® slim fit design, to fit 3 across in most vehicles without compromising child or passenger comfort.
Engineered to keep your child rear-facing for longer up to 22.7 kg.

Plays well with
Radian® XL Cup Holder - 2 Pack
$14.99
Compatible with all Diono All-in-One convertible car seats and Everett NXT
Customers Also loved
Radian®/Rainier/Everett® Cup Holders - 2 Pack
$14.99
Compatible with all Diono All-in-One convertible car seats and Everett NXT