Skip to content
  • 💳 More bang for your buck + free shipping 💳
  • 💳 More bang for your buck + free shipping 💳
Chicco Kids ShopChicco Kids Shop
  • Gear & Activity
    • Baby Toys
    • Highchairs & Boosters
    • Baby Activity Gyms & Playmats
    • Baby Gates
    • Baby Carriers
    • Baby Jumpers & Activity Centers
    • Baby Walkers
    • Swings
    • Baby Seats & Positioners
    • Bouncers & Rockers
  • Nursing & Feeding
    • Bibs & Burp Cloths
    • Breastfeeding
    • Bottle Feeding
    • Baby Tableware
    • Sippy Cups
    • Baby Food Prep
    • Formula
    • Baby Food
  • Strollers
    • Stroller Accessories
    • Double Strollers
    • Lightweight Strollers
    • Travel System Strollers
    • Full-size Strollers
    • Jogging Strollers
    • Car Seat Carriers
    • Best Baby Strollers
  • Car Seats
    • Car Seat Accessories
    • Convertible Car Seats
    • Infant Car Seats
    • Booster Car Seats
    • Toddler Car Seats
    • No products in the cart.

      Return to shop

  • Cart

    No products in the cart.

    Return to shop

Home / Car Seats / Toddler Car Seats
Sale!
Diono Radian 3QX All-in-One Convertible Car Seat With Accessories, Gray Slate
Diono Radian 3QX All-in-One Convertible Car Seat With Accessories, Gray Slate - Image 2
Diono Radian 3QX All-in-One Convertible Car Seat With Accessories, Gray Slate - Image 3
Diono Radian 3QX All-in-One Convertible Car Seat With Accessories, Gray Slate - Image 4
Diono Radian 3QX All-in-One Convertible Car Seat With Accessories, Gray Slate - Image 5
Diono Radian 3QX All-in-One Convertible Car Seat With Accessories, Gray Slate - Image 6
Diono Radian 3QX All-in-One Convertible Car Seat With Accessories, Gray Slate - Image 7
Diono Radian 3QX All-in-One Convertible Car Seat With Accessories, Gray Slate - Image 8
Diono Radian 3QX All-in-One Convertible Car Seat With Accessories, Gray Slate - Image 9
Diono Radian 3QX All-in-One Convertible Car Seat With Accessories, Gray Slate - Image 10
Diono Radian 3QX All-in-One Convertible Car Seat With Accessories, Gray Slate - Image 11
Diono Radian 3QX All-in-One Convertible Car Seat With Accessories, Gray Slate - Image 12
Diono Radian 3QX All-in-One Convertible Car Seat With Accessories, Gray Slate - Image 13
Diono Radian 3QX All-in-One Convertible Car Seat With Accessories, Gray Slate -Chicco Kids Shop GUEST ce414b8f c5bd 45df 940a fd4d935af9af
Diono Radian 3QX All-in-One Convertible Car Seat With Accessories, Gray Slate -Chicco Kids Shop GUEST b409aea9 4582 452d 84df cae6497e3429
Diono Radian 3QX All-in-One Convertible Car Seat With Accessories, Gray Slate -Chicco Kids Shop GUEST 583955d7 2fce 4f72 8ef8 56b446b2aa27
Diono Radian 3QX All-in-One Convertible Car Seat With Accessories, Gray Slate -Chicco Kids Shop GUEST 90c460b8 05f5 4066 8033 17b2e1200abe
Diono Radian 3QX All-in-One Convertible Car Seat With Accessories, Gray Slate -Chicco Kids Shop GUEST 059f8790 6934 4639 8d14 f764fa2cc695
Diono Radian 3QX All-in-One Convertible Car Seat With Accessories, Gray Slate -Chicco Kids Shop GUEST 420981a7 66f6 4911 8fd0 302c791ea6f9
Diono Radian 3QX All-in-One Convertible Car Seat With Accessories, Gray Slate -Chicco Kids Shop GUEST 4e5ceff6 df76 4d04 9d8a 1a90c4ff032a
Diono Radian 3QX All-in-One Convertible Car Seat With Accessories, Gray Slate -Chicco Kids Shop GUEST 867cff28 9817 4af7 bd8f 1cb62ca183ca
Diono Radian 3QX All-in-One Convertible Car Seat With Accessories, Gray Slate -Chicco Kids Shop GUEST fa58be52 4d59 465e 8d15 136687f58649
Diono Radian 3QX All-in-One Convertible Car Seat With Accessories, Gray Slate -Chicco Kids Shop GUEST 0519f596 2037 4591 b764 b5e49cc387af
Diono Radian 3QX All-in-One Convertible Car Seat With Accessories, Gray Slate -Chicco Kids Shop GUEST edca698c 6a8f 4451 a5d4 db2b1fffc1a9
Diono Radian 3QX All-in-One Convertible Car Seat With Accessories, Gray Slate -Chicco Kids Shop GUEST 9cb019d2 30e3 49c2 a64a c793723d61af

Diono Radian 3QX All-in-One Convertible Car Seat With Accessories, Gray Slate

$249.99 Original price was: $249.99.$95.99Current price is: $95.99.

SKU: DGFYZ 89675687 Categories: Car Seats, Toddler Car Seats Tag: Diono
  • 100% environmentally friendly material
  • Your Security is Our Promise
  • Satisfaction Guaranteed
  • Safe Payments, the Smart Choice
Browse
  • Car Seats
    • Booster Car Seats
    • Car Seat Accessories
    • Convertible Car Seats
    • Infant Car Seats
    • Toddler Car Seats
  • Gear & Activity
    • Baby Activity Gyms & Playmats
    • Baby Carriers
    • Baby Gates
    • Baby Jumpers & Activity Centers
    • Baby Seats & Positioners
    • Baby Toys
      • Baby Blocks, Stackers & Sorters
      • Baby Musical Toys
      • Baby Toy Gift Sets
      • Car Seat & Stroller Toys
      • Rattles & Teethers
      • Soft & Plush Toys
      • Soothers & Sound Machines
    • Baby Walkers
    • Bouncers & Rockers
    • Highchairs & Boosters
    • Swings
  • Nursing & Feeding
    • Baby Food
    • Baby Food Prep
    • Baby Tableware
    • Bibs & Burp Cloths
    • Bottle Feeding
    • Breastfeeding
    • Formula
    • Sippy Cups
  • Strollers
    • Best Baby Strollers
    • Car Seat Carriers
    • Double Strollers
    • Full-size Strollers
    • Jogging Strollers
    • Lightweight Strollers
    • Stroller Accessories
    • Travel System Strollers
  • Uncategorized
  • Description
  • Additional information
  • Reviews (0)

Product Description

The ultimate 3-Across, All-in-One convertible car seat from birth to booster (4 – 120 lb.) provides the next generation in car seat safety. It features three-stages of complete newborn protection and Diono SafePlusâ„¢ engineering. Now with 3 bonus travel accessories.

Product Highlights

  • Why parents will love it: The ultimate 3-across Radian® 3QX adapts as your child grows to offer a custom fit from birth up to 120 lb. It’s designed with SafePlusâ„¢ protection to keep your child rear-facing for even longer. Now with 3 great bonus travel accessories to keep them safe, protected and content
  • Why kids will love it: A memory foam cushion, expandable sides and seat bottom adjust for a perfectly comfortable ride and fit, plus the low-sitting profile makes it easy for kids to get in themselves when they’re ready. Plus, keep kids’ favorite travel items organised and within reach with the use of the Stow ’N Go® XL
  • Child weight/height: 4–50 lb. rear-facing with included infant insert; 22–65 lb. forward-facing with harness; 40–120 lb. forward-facing as booster
  • Safety features: Three-stage complete newborn protection: SafePlusâ„¢ newborn travel high wedge, SafePlusâ„¢ 2-in-1 infant positioning liner and SafePlusâ„¢ newborn harness pads to provide a custom fit from birth; SafePlusâ„¢ steel anti-rebound bar for increased stability and reduced rebound rotation by up to 50% to keep your child rear-facing up to 50 lb.; with SafePlusâ„¢ 6 layers of side impact protection, SafePlusâ„¢ steel core and SafePlusâ„¢ easy adjust 12-position headrest. The additional Ultra Mat® Car Seat Protector is built with an anti-slip design to prevent car seat slipping, keeping your children secure in the back seat. Plus, Starry Night window shade provides complete protection and is glow in the dark
  • Harness: Five shoulder and three buckle positions
Dimensions (Overall)

28.5 inches (H) x 17 inches (W) x 16 inches (D)

Weight

31.3 pounds

Features

Forward or Rear Facing Seat

Fits Child (Forward Facing)

Height between 29.9 inches and 57.1 inches, Weight between 4 pounds and 120 pounds

Fits Child (Rear Facing)

Height between 18.1 inches and 44.1 inches, Weight between 4 pounds and 50 pounds

Industry or Government Certifications

Meets Federal Motor Vehicle Safety Standards

Material

Steel

Battery

No Battery Used

Care & Cleaning

Machine Washable Cover

Reviews

There are no reviews yet.

Be the first to review “Diono Radian 3QX All-in-One Convertible Car Seat With Accessories, Gray Slate” Cancel reply

Related products

Sale!
Diono Radian 3R All-in-One Convertible Car Seat
Quick View

Car Seats

Diono Radian 3R All-in-One Convertible Car Seat

$199.99 Original price was: $199.99.$95.99Current price is: $95.99.
Sale!
Diono Ultra Dry Seat 2-Pack, Car Seat Pad, Waterproof Liner, High Chair, Car Seats And Strollers, Gray
Quick View

Car Seat Accessories

Diono Ultra Dry Seat 2-Pack, Car Seat Pad, Waterproof Liner, High Chair, Car Seats And Strollers, Gray

$26.99 Original price was: $26.99.$18.89Current price is: $18.89.
Sale!
Diono Excurze Luxe Carrycot For Newborn, Stroller Basinett, From Birth
Quick View

Stroller Accessories

Diono Excurze Luxe Carrycot For Newborn, Stroller Basinett, From Birth

$99.99 Original price was: $99.99.$69.99Current price is: $69.99.
Sale!
Diono Easy View Bear Baby Car Mirror For Rear Facing Infant, Adjustable, Shatterproof, Crash Tested
Quick View

Car Seat Accessories

Diono Easy View Bear Baby Car Mirror For Rear Facing Infant, Adjustable, Shatterproof, Crash Tested

$24.99 Original price was: $24.99.$17.49Current price is: $17.49.
Sale!
Diono Stuff 'N Scuff XL Kick Mat Back Seat Protector, Storage Pocket, 100% Water Resistant, Gray
Quick View

Car Seat Accessories

Diono Stuff ‘N Scuff XL Kick Mat Back Seat Protector, Storage Pocket, 100% Water Resistant, Gray

$12.99 Original price was: $12.99.$9.09Current price is: $9.09.
Sale!
Diono Super Mat Car Seat Protector For Infant Car Seat, Booster Seat, Pets, Water Resistant, Gray
Quick View

Car Seats

Diono Super Mat Car Seat Protector For Infant Car Seat, Booster Seat, Pets, Water Resistant, Gray

$19.99 Original price was: $19.99.$13.99Current price is: $13.99.
Sale!
Diono Excurze Luxe Stroller, Infant, Baby And Toddler, Car Seat Compatible, Narrow Fit, Compact Fold
Quick View

Full-size Strollers

Diono Excurze Luxe Stroller, Infant, Baby And Toddler, Car Seat Compatible, Narrow Fit, Compact Fold

$386.00 Original price was: $386.00.$95.99Current price is: $95.99.
Sale!
Diono Universal Weatherproof Newborn Pod Luxury Stroller Footmuff With Head And Body Support
Quick View

Stroller Accessories

Diono Universal Weatherproof Newborn Pod Luxury Stroller Footmuff With Head And Body Support

$139.99 Original price was: $139.99.$96.99Current price is: $96.99.
MY ACCOUNT
  • My account
  • Wishlist
  • Checkout
  • Cart
ABOUT US
  • About Us
  • Returns & Exchanges
  • Delivery
  • FAQ
  • Contact Us
LEGAL
  • Privacy Policy
  • Shipping Policy
  • Payment Method
  • Term and Conditions
Signup for Newsletter

Sign up for exclusive offers, original stories, events and more.

    Copyright 2026 © Chicco Kids Shop
    • Gear & Activity
      • Baby Toys
      • Highchairs & Boosters
      • Baby Activity Gyms & Playmats
      • Baby Gates
      • Baby Carriers
      • Baby Jumpers & Activity Centers
      • Baby Walkers
      • Swings
      • Baby Seats & Positioners
      • Bouncers & Rockers
    • Nursing & Feeding
      • Bibs & Burp Cloths
      • Breastfeeding
      • Bottle Feeding
      • Baby Tableware
      • Sippy Cups
      • Baby Food Prep
      • Formula
      • Baby Food
    • Strollers
      • Stroller Accessories
      • Double Strollers
      • Lightweight Strollers
      • Travel System Strollers
      • Full-size Strollers
      • Jogging Strollers
      • Car Seat Carriers
      • Best Baby Strollers
    • Car Seats
      • Car Seat Accessories
      • Convertible Car Seats
      • Infant Car Seats
      • Booster Car Seats
      • Toddler Car Seats
    • Login

    Login

    Lost your password?

    Register

    Your personal data will be used to support your experience throughout this website, to manage access to your account, and for other purposes described in our privacy policy.