The Diono Radian® 3RXT® SafePlus + Booster Seat is the ultimate all-in-one car seat designed for safety, longevity, and convenience. With the ability to transition from rear-facing to forward-facing and high-back booster modes, it supports children from 4 to 120 lbs, making it suitable for use from infancy to the preteen years. Equipped with SafePlus® engineering, including advanced side-impact protection and an anti-rebound bar, this seat offers unparalleled security. Its slim-fit design allows for 3-across installation in most vehicles, while the folding mechanism ensures easy storage and travel.
Diono is a leader in innovative car seat design, dedicated to creating products that protect children and simplify parenting. Known for their reinforced steel core construction and commitment to safety standards, Diono seats are hand-built with precision and care. Backed by rigorous testing and compliance with NHTSA and CMVSS regulations, the Radian® 3RXT® SafePlus provides peace of mind and unmatched reliability for families.
With over 20 years of design and engineering expertise rooted in Seattle, Diono represents the pioneering spirit and cultural identity of this vibrant city. Known for innovation since 1999, the brand introduced groundbreaking industry firsts, including the Radian® All-in-One convertible car seat with a full steel core and the expandable Monterey® booster seat. Today, millions of children travel safely in Diono car seats, a testament to the brand's commitment to technical excellence and family-focused solutions. From car seats to strollers, baby carriers, and accessories, Diono products are designed to enhance every family's journey, delivering safety, innovation, and comfort at every step.
Diono Radian® 3RXT® SafePlus + Booster Seat Features:
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All-in-One Design: Supports children from 4 to 120 lbs, transitioning from rear-facing to forward-facing and booster seat modes.
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SafePlus® Side Impact Protection: Features advanced 6-layer side-impact protection to redirect crash forces and protect your child.
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Slim-Fit for 3-Across: Designed to fit three seats across in most vehicles without sacrificing safety or comfort.
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Reinforced Steel Core: Automotive-grade high-strength steel core offers unmatched durability and crash force absorption.
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Travel-Friendly Folding Mechanism: Folds flat for compact storage or travel and is FAA-approved for air travel.
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Extended Rear-Facing Capability: Safely seats children rear-facing up to 50 lbs, with added anti-rebound bar for enhanced stability.
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Adjustable and Comfortable: Includes a 12-position headrest, expandable seat base sides, and a low seat height for easy access.
What are the weight and height limits for each mode?
Rear-Facing: 4–50 lbs (44 inches height limit)
Forward-Facing: 22–65 lbs
Booster: 40–120 lbs (up to 57.1 inches)
Can I fit three Radian® 3RXT® seats across in my car?
Yes, the slim-fit design allows for 3-across installation in vehicles with a minimum width of 51 inches.
What is SafePlus® engineering?
SafePlus® engineering includes advanced rear and side impact protection with features like a steel anti-rebound bar and side impact pods for enhanced safety.
Is this seat suitable for newborns?
Yes, the Radian® 3RXT® SafePlus includes a 2-in-1 infant positioning liner and high wedge, making it ideal for newborns from 5 lbs.
Does the car seat fold for storage or travel?
Yes, it folds flat for compact storage and is FAA-approved for air travel.
What is the purpose of the anti-rebound bar?
The anti-rebound bar reduces rearward rotation in a crash by up to 50%, providing added stability and safety.
Does this seat come with a cup holder?
Yes, the seat includes a removable and dishwasher-safe cup holder that attaches easily.
Are Diono® accessories compatible with this seat?
Yes, Diono® recommends approved accessories like the Angle Adjuster®, Car Seat Travel Backpack, and Side Impact Pods for added convenience.
How do I clean the seat covers?
The covers are machine washable on a cold cycle. Line dry for best results.
How long can I use the Radian® 3RXT® SafePlus?
The car seat has a lifespan of 10 years from the date of purchase, ensuring long-lasting use.
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1- Safe Stop® System
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1- Lap Belt Cushion
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1- Rear-Facing Base
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1- Cup Holder
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1- Harness and Buckle Pads
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1- 2-in-1 Infant Positioning Liner
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1- Newborn Travel High Wedge
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1- Product Manual
What are the weight and height limits for each mode?
Rear-Facing: 4–50 lbs (44 inches height limit)
Forward-Facing: 22–65 lbs
Booster: 40–120 lbs (up to 57.1 inches)
Can I fit three Radian® 3RXT® seats across in my car?
Yes, the slim-fit design allows for 3-across installation in vehicles with a minimum width of 51 inches.
What is SafePlus® engineering?
SafePlus® engineering includes advanced rear and side impact protection with features like a steel anti-rebound bar and side impact pods for enhanced safety.
Is this seat suitable for newborns?
Yes, the Radian® 3RXT® SafePlus includes a 2-in-1 infant positioning liner and high wedge, making it ideal for newborns from 5 lbs.
Does the car seat fold for storage or travel?
Yes, it folds flat for compact storage and is FAA-approved for air travel.
What is the purpose of the anti-rebound bar?
The anti-rebound bar reduces rearward rotation in a crash by up to 50%, providing added stability and safety.
Does this seat come with a cup holder?
Yes, the seat includes a removable and dishwasher-safe cup holder that attaches easily.
Are Diono® accessories compatible with this seat?
Yes, Diono® recommends approved accessories like the Angle Adjuster®, Car Seat Travel Backpack, and Side Impact Pods for added convenience.
How do I clean the seat covers?
The covers are machine washable on a cold cycle. Line dry for best results.
How long can I use the Radian® 3RXT® SafePlus?
The car seat has a lifespan of 10 years from the date of purchase, ensuring long-lasting use.
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