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Diono Radian 3RXT
Diono Radian 3RXT
Diono Radian 3RXT
DIono 3RXT Purple Plum
Diono Radian 3RXT
Diono Radian 3RXT
Diono Radian 3RXT
Diono radian® 3RXT
Diono radian® 3RXT
Diono radian® 3RXT 2020
Diono Radian 3RXT
Diono Radian 3RXT
Diono Radian 3RXT
Diono Radian 3RXT

Diono Radian® 3RXT (2020)

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The Diono Radian® 3RXT is the original 3 across All-in-One convertible car seat, trusted by over a million parents to protect their child from birth to booster. Lovingly engineered with the famous Diono Steel Core and now rear facing for even longer.

Designed and engineered with complete rear facing protection, Radian® 3RXT 2020 will keep now your precious cargo rear facing for even longer up to 22.7kg (approx. 4 years old). Then as they transition to forward facing, the aluminum reinforced headrest can be adjusted to one of 12 positions for safety that grows with them.

  • SAFE & COMFORTABLE NEWBORN POSITIONING -  Features newborn travel high wedge to create a lie-flat travel position. Then as your baby grows, simply remove the wedge to allow the 2-in-1 infant positioning liner to give cozy, comforting support. 
  • THE ORIGINAL 3 ACROSS - Built with our famous radian® slim fit design, to fit 3 across in most vehicles without compromising child or passenger comfort.

    • REAR FACING FOR LONGER - Designed and engineered to keep your child rear facing for even longer up to 22.7kg (approx. 4 years old).
    • STEEL CORE - Mechanically engineered, reinforced steel core, made from automotive grade high strength steel to shield and protect.
      Product  Dimensions      
      Weight 11.97kg
      Depth 40.64cm
      Width 43.18cm
      Height 72.39cm
      Childs Height,
      Weight, & Age
      Rear Facing  
      Height Up to 112cm

      2.2kg - 22.7kg

      Forward Facing  

      Up to 145cm


      Harness: 10kg-29.5kg / Booster 18kg-54kg

      Installation Method



      Yes (Superlatch)

      Seat Belt System

      3 point seatbelt or lap belt

      lnbuilt Lock-offs


      Top Tether


      Safety Standard




      New Zealand Standard 'S' Mark


      Safety Features


      Side Impact Protection


      Energy-Absorbant Foam


      Level Indicators



      5 Point Harness

      Extended Information


      Expiry Date

      10 Years from DOP

      Airplane Approved


      Washable Covers

      Machine Washable - Follow Manufacturers Instructions

      Manufacture Warranty

      1 Year from Date of Original Purchase



      Diono Radian® 3RXT 2020 Instruction Manual