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Diono Radian 3RXT Safe+ Convertible Car Seat

by Diono

Diono Radian 3RXT Safe+ Convertible Car Seat

by Diono
Color: Gray Slate
Ships in 1-2 weeks

Call to order: 888-677-5583

Product Details

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.

Why Parents Love the Diono Radian 3RXT Safe+ Convertible Car Seat 

  • Adapt as your child grows from birth to booster (4-120 lbs)
  • Safe+ steel-reinforced frame and core to shield and protect
  • Slim fit design allows 3-across seating in most vehicles

Why Children Love the Diono Radian 3RXT Safe+ Convertible Car Seat 

  • 12-position headrest to accommodate growing child comfortably
  • Includes multiple newborn inserts for ultimate comfort
  • Soft, comfy memory foam cushions

What's Included

  • Diono Radian 3RXT Safe+ Convertible Car Seat 
  • Newborn Travel Wedge
  • Infant Positioning Liner
  • Anti-rebound Bar


  • 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
  • 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
  • Adapts as your child grows from rear-facing to forward facing, birth to booster. Up to ten years.
  • Slim fit 3-across in most midsize vehicles
  • 6 layers of side-impact protection
  • Machine washable cover
  • FAA approved; folds for travel
  • Easy LATCH installation
  • Memory foam cushions

Installation Options

  • Rigid LATCH
  • Seatbelt Installation 

Weight Capacity 

  • Minimum User Weight: 5 lbs
  • Maximum User Weight: 120 lbs
  • Rear Facing:
    • Minimum weight: 5 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"

Weight and Dimensions 

  • Product Height: 28.5"
  • Product Width: 17"
  • Product Depth: 16"
  • Seat Weight: 28.1 lbs

Car Seat Care Instructions

  • Covers: Machine wash cold, line dry. Shell and Components: Spot clean
Shipping & Returns

Free 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.

Shipping Rates

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: