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Diono Radian 3R Convertible Car Seat
Diono Radian 3R Convertible Car Seat
Regular price
$219.99
Regular price
Sale price
$219.99
Unit price
/
per
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The original 3-Across All-In-One™ convertible car seat, the Diono Radian 3R is all you need for your child! Use from birth through booster for up to 10 years in 1 car seat. Growing with your child, the Radian 3R provides ultimate protection on every road trip.
Diono is the only car seat manufacturer to offer a folding convertible car seat. This makes it the perfect travel seat as it is so compact and folds into a handy car seat travel backpack, saving space for trunk or home storage.
Now available in new, two-toned colorways with additional features and accessories!
Best Price Guarantee
Best Price Guarantee
If you find a lower price on any item that we sell, we will gladly match it. We understand that caring for a baby isn’t cheap and that baby gear and supplies quickly add up.
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.
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.
To obtain a price adjustment, please contact email
Customer Service at hello@babycubby.com
Customer Service at hello@babycubby.com

A one-time price adjustment per item will be honored
when items are purchased at full retail price and the
merchandise (of the same style, color, and size) is
discounted within 14 days of the original purchase date.
when items are purchased at full retail price and the
merchandise (of the same style, color, and size) is
discounted within 14 days of the original purchase date.
Price Match Exceptions:
Items purchased with a promo code or discount code are
not eligible for price adjustments.
Price adjustments are not provided during Black Friday or
Cyber Monday sales.
not eligible for price adjustments.
Price adjustments are not provided during Black Friday or
Cyber Monday sales.
Free Shipping!
Free Shipping!
Car seats over $95 ship free within the continental U.S.A. Unfortunately, orders shipping to Alaska, Hawaii, Puerto Rico, or APO/FPO addresses do not qualify for free shipping.
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.
Shop Confidently - Talk to our Gear Experts
Shop Confidently - Talk to our Gear Experts
Gear Experts
Our team at Baby Cubby are product and gear experts. We have certified CPST's and gear experts with hundreds of hours of hands on experience with car seats, strollers and product research. When you shop with us we are here to help and support you throughout your parenting journey for years to come, not just with this purchase.
Have Questions?
We are here to support you and help you become the confident parent you deserve to be. You can visit one of our retail stores during regular business hours to talk with a CPS tech or gear expert, or schedule a phone or video call with us.
What is a CPST?
A CPS tech is a Certified Passenger Safety Technician. Our Cubby Moms who have certified as CPS techs are specially trained on how to properly install car seats and booster seats, ensuring they know everything there is to know about keeping children safe in vehicles.
Through required continuing education courses and hours of personal research and team training, our CPS techs are able to remain up to date on the latest technical information regarding child safety.

How does a CPS tech get certified?
In order to become certified, each prospective tech must attend The National Child Passenger Safety Certification Training Program. After intensive classroom instruction, they must pass a variety of written tests, demonstrate their knowledge through hands-on skills assessments, and perform safety checks at a check-up event before becoming certified. They learn the ins and outs of car seat installation possibilities, installing car seats in different vehicles, harnessing methods, and more. The car seat and safety industry is constantly changing, so our CPS techs here at The Baby Cubby are an invaluable resource for parents purchasing a new car seat, or for ones who simply want someone to double check that their current car seat is properly installed.
Features
Features
- 10 Years 1 Car Seat®: From Birth to Booster (5 through 120 lbs)
- Rear Facing for Longer: Lovingly engineered to keep your child rear-facing up to 50 lbs
- Fits 3-Across: Diono's famous slim-fit design with zero compromises to safety, space, or comfort*
- Mechanically engineered from reinforced automotive grade high-strength steel, Diono's unique core shell shields and protects your child
- High-quality ComfortPlus Memory Foam, always included
- The original and only all-in-one convertible car seat that folds for travel or compact storage
- FAA approved for airline use
- Low seat base makes it easier for child to get in and out of the car on their own
- Seat sides on the base expand as your child grows for easier travel
- Exclusive Features: With limited colored seats, you will also receive a head support pillow, comfort cushion and 2 XL cup holders (ONLY with the following color seats: Black Storm, Blue Surge, Blue Razz Ice, Purple Wildberry and Pink Cotton Candy)
- Expiration: 10 years, starting from when you purchase your seat. (If the date of purchase cannot be determined then use the date of manufacture.)
- Compliance with US Federal Motor Vehicle Safety Standards (FMVSS), US National Highway Traffic Safety Administration (NHTSA), and Canadian Motor Vehicle Safety Standards (CMVSS)
- 12 months standard warranty
*Note: 51" is the minimum vehicle seat width needed between the vehicle's interior structures to fit your Radian® 3R®
What's Included
What's Included
- Diono Radian 3R Convertible Car Seat
- Product Manual
- Safe Stop®
- Lap Belt Cushion
- Rear-Facing Base
- Harness + Buckle Pads
Black Storm, Blue Surge, Blue Razz Ice, Purple Wildberry and Pink Cotton Candy also include:
- Head support pillow
- Comfort cushion
- 2 XL cup holders
Specifications
Specifications
Weight and Height Capacity
- Rear-Facing Weight: 5 to 50 lbs with seatbelt installation; 5 to 35 lbs with LATCH
- Forward-Facing Weight: 22 to 65 lbs with seatbelt installation; 22 to 40 lbs with LATCH
- Booster Weight: 40 to 120 lbs
- Height Capacity: 57"
Product Weight and Dimensions
- Unfolded Dimensions: 28.4" H x 16.9" W x 16.1" D
- Folded Dimensions: 28.4" H x 16.9" W x 8"D
- Product Weight: 23 lbs (Black Jet, Gray Slate, Blue Sky, Pink Blossom, Red Cherry)
- Product Weight: 23.37 lbs (Black Storm, Blue Surge, Blue Razz Ice, Purple Wildberry, Pink Cotton Candy)
Additional Specifications
- Interior Shoulder Width: 12"
- Interior Hip Width: 12"
- Inside Seat Depth: 13"
- Maximum Harness Shoulder Height: 16.5"
- Minimum Harness Shoulder Height: 7.5"
- Closest Buckle Slot: 3.5"
- Furthest Buckle Slot: 7.5"
- Harness Positions: 5
Installation Options
- Seat Belt Installation
- LATCH Installation
Care Instructions
- Covers: Machine wash cold, line dry
- Shell and Components: Spot clean
Compatibility + Accessories
Compatibility + Accessories
Accessories
- Diono Rear-Facing Angle Adjuster® (To allow for more space behind front seat)
- Diono Radian 3R Comfort Travel Kit with 2 Cupholders
- Diono Radian XL Cup Holder - 2 Pack
- Diono Car Seat Travel Backpack
- Diono Ultra Mat™
- Diono Easy View Mirror®
- Diono Super Lock