Diono Radian 3RXT SafePlus Convertible Car Seat
Diono Radian 3RXT SafePlus Convertible Car Seat
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The original 3-across, all-in-one car seat just got better. Upgraded with 18 improvements from the award-winning original Radian 3RXT, the Diono Radian 3RXT Safe+ Convertible Car Seat features Diono Safe+ engineering, Safe+ anti-rebound panel and advanced Safe+ side impact protection for complete protection from birth to booster.
The Radian 3RXT Safe+ adapts as your child grows from birth up to 120 lbs, making it the only seat they'll ever need. Plus, its slim fit design allows 3-across seating in most vehicles so you can accommodate all your little ones in ultra-safe and comfy car seats!
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Best Price Guarantee
The product must be the exact same color/style/size and be in stock on competitor’s website. Unfortunately, we cannot price match auction-based websites and the seller must be an authorized distributor of the brand. Some brands and manufacturers are excluded from our price match policy.
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when items are purchased at full retail price and the
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not eligible for price adjustments.
Price adjustments are not provided during Black Friday or
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Car Seat Returns
Car Seat Returns
You can return your car seat within 30 days if it is unopened and unused. See our full return policy here.
Easy Returns
Easy Returns
You can return your car seat within 30 days if it is unopened and unused. See our full return policy here.
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Shop Confidently - Talk to our Gear Experts
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What is a CPST?

How does a CPS tech get certified?
Features
Features
- Adapts as your child grows from rear-facing to forward-facing mode, birth to booster, up to 120 lbs
- Slim fit 3-across in most midsize vehicles
- Easy-adjust 12-position headrest
- 6 layers of Safe+ side impact protection and Safe+ testing
- Steel anti-rebound bar reduces rebound rotation by up to 50% for extended rear-facing travel up to 50 lbs
- Safe+ steel-reinforced frame and core to shield and protect
- Newborn travel wedge, anti-rebound bar, and infant positioning liner make rear-facing travel extra safe
- Safe+ engineering is unique combination of engineering features and testing to the highest safety standards
- Machine washable cover
- FAA approved; folds for travel
- Easy LATCH installation
- Memory foam cushions
What's Included
What's Included
What's Included
- Radian 3RXT Safe+ Convertible Car Seat
- Rear-Facing Base
- Infant Positioning Liner
- Newborn Travel High Wedge
- Cup Holder
- SafePlus™ Steel Anti-Rebound Bar
- Harness Pads and Lap Belt Cushion
- Rear-Facing Top Tether Strap
Specifications
Specifications
Weight and Height Capacity
- Minimum User Weight: 4 lbs
- Maximum User Weight: 120 lbs
Rear Facing:
- Minimum weight: 4 lbs
- Maximum weight: 50 lbs
- Maximum weight with LATCH: 35 lbs
Forward Facing:
- Minimum weight: 22 lbs
- Maximum weight: 65 lbs
- Maximum weight with LATCH: 40 lbs
Booster:
- Minimum Weight: 40 lbs
- Maximum Weight: 120 lbs
- Maximum Height: 57.1"
Product Weight and Dimensions
- Weight: 28.1 lbs
- Dimensions: 28.5"H x 17"W x 16"D
Installation Options
- Rigid LATCH
- Seat Belt Installation
Care Instructions
- Covers: Machine wash cold, line dry. Shell and Components: Spot clean
Compatibility + Accessories
Compatibility + Accessories
Accessories
- Radian Car Seat Travel Backpack
- Ultra Mat and Heat Sun Shield Car Seat Protector
- Radian Rear-Facing Angle Adjuster
- Radian XL Cup Holder - 2 Pack
Additional Resources
Additional Resources


















