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Diono Radian 3QXT Convertible Car Seat

Diono Radian 3QXT Convertible Car Seat

Regular price $449.99
Regular price Sale price $449.99
Sale Sold out
Color : Gray Slate
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The Diono Radian 3QXT Convertible Car Seat is the ultimate 3-across, all-in-one car seat. It transitions from infant car seat to booster seat and features advanced 4-in-1 newborn protection and all new Safe+ engineering to provide the next generation in car seat safety.

Why Parents Love the Diono Radian 3QXT Convertible Car Seat

  • Grows with your child for 10 years of use (4 - 120 lbs)
  • Features 8 layers of Safe+ side impact protection 
  • Slim fit design allows for 3-across in most vehicles

Why Children Love the Diono Radian 3QXT Convertible Car Seat 

  • Contoured,12-position headrest for ultimate comfort and stability
  • Infant inserts for best possible positioning
  • Same seat lasts from birth to pre-teen

What's Included

  • Diono Radian 3QXT Convertible Car Seat
  • 4-Stage Newborn Inserts: Protection Insert, Travel High Wedge, 2-in-1 Infant Positioning Liner, Harness Pads


  • Adapts for 10 years of use, from infant to booster seat, rear and forward facing, 
  • 4-in-1 newborn protection with Safe+ inserts
  • Safe+ steel anti-rebound bar to reduce rebound rotation by 50%
  • Steel-reinforced frame
  • 8 layers of side-impact protection with side-impact management pod
  • Diono SuperLATCH attachment
  • Slim fit design for 3-across seating
  • One-hand, easy-adjust 12-position headrest 
  • Comfort+ memory foam cushion
  • Machine washable cover

Installation Options

  • Rigid LATCH
  • Seatbelt Installation 

Weight Capacity 

  • User Weight: 4-120 lbs
  • Rear Facing: 4-50 lbs
  • Rear Facing LATCH Maximum User Weight: 35 lbs
  • Forward Facing: 22-65 lbs
  • Forward Facing LATCH Maximum User Weight: 40 lbs
  • Booster: 40-120 lbs
  • Maximum User Height: 57.1"

Weight and Dimensions 

  • Product Height: 28.5" 
  • Product Width: 17 in"
  • Product Depth: 16 in"
  • Seat Weight: 32 lbs"
  • Product Height - Folded: 28.5"
  • Product Width - Folded: 17"
  • Product Depth - Folded: 11.5"

    Car Seat Return and Shipping Policy

    Car Seat Returns

    Due to safety concerns, only unopened car seats can be returned. Safety is our top priority and we want you to keep your kiddos safe. If you have any questions, please reach out to 

    Car Seat Shipping

    Free Shipping applies to standard shipping orders over $95 within the continental U.S.A. Unfortunately, orders shipping to Alaska, Hawaii, Puerto Rico, or APO/FPO addresses do not qualify for free shipping.
    Large furniture items that must ship as freight such as cribs, gliders and dressers have a separate furniture delivery fee.

    Free 5-7 days shipping is available on every order over $95 (excluding taxes and shipping fees) in the continental U.S.A. If you are in need of expedited shipping, the cost will be dependent upon your area and how fast you are wanting it shipped to you. You can get a shipping quote in your cart at checkout.

    Shipping Timeline

    For standard shipping, FedEx and USPS have up to 5-7 business days to deliver your order. However, most items arrive within 3-5 business days.

    To track your package, follow one of the links below:

    United States Postal Service (USPS) Tracking:

    FedEx Tracking:

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