Diono Radian® 3RXT SafePlus

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Our best-selling and most loved 3 Across All-In-One™ convertible car seat. Up to 10 years of use upgraded with 15 SafePlus™ additions.

Granted by the Insurance Institute for Highway Safety (IIHS), the BEST BET award is bestowed to car seats and boosters that provide good belt fit for typical ages approximately from 4 to 8 years old in almost any car, minivan, or SUV. The IIHS is an independent, scientific, and educational organization dedicated to reducing injuries and property damage from motor vehicle crashes through the education of consumers, policymakers, and safety professionals.


    • 10 Years 1 Car Seat® - from Birth to Booster (4 - 120 lb) it's all you will need. Grows with your child, ultimate protection on every road trip. 4 modes in 1 seat!
    • SafePlus™ Rear-Facing Engineering up to 50 lb. With 3 modes of newborn protection, our steel anti-rebound bar reduces rebound rotation by up to 50%.
    • Fits 3-Across - our famous slim-fit design with SafePlus™ 6-layer side impact protection with zero compromises to safety, space, or comfort.
    • Mechanically engineered from reinforced automotive grade high-strength steel, our unique core shell shields and protects your child.
    • One hand easy-adjust 12-position headrest, the SafePlus™ completes 6 layers of enhanced, rigorously tested, side impact protection.
    • The original and only all-in-one convertible car seat that folds for travel or compact storage. FAA approved for airline use.


    • Usage:
      • Rear-facing: 4 - 50 lbs
      • Max rear facing LATCH: 35 lb
      • Forward-facing: 22 - 65 lbs in a 5-point harness
      • Max forward facing LATCH: 40 lb
      • Booster: 40 -120 lbs (and up to 57")
    • Product Height: 28.5 in
    • Product Width: 17 in
    • Product Depth: 16 in
    • Product Height - Folded: 28.5 in
    • Product Width - Folded: 17 in
    • Product Depth - Folded: 11.5 in
    • Seat Weight: 30.6 lb
    • Number of Head Support Positions: 12


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