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Diono Radian 3RXT SafePlus

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The original 3 across All-in-One Car Seat just got better. Upgraded with 15 improvements from the award-winning Radian 3RXT.

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The original 3 across All-in-One Car Seat just got better. Upgraded with 15 improvements from the award-winning Radian 3RXT.

Diono Radian 3RXT SafePlus features Diono SafePlus engineering, SafePlus anti-rebound panel and advanced SafePlus Side Impact Protection for complete protection from birth to booster 1.8 – 54 kg/4 – 120 lb.

From baby’s first journey the Radian 3RXT SafePlus provides complete rear-facing protection with a SafePlus newborn travel high wedge and SafePlus 2-in-1 infant positioning liner for a custom fit from 1.8 kg/4 lb.

As your child grows the SafePlus steel anti-rebound bar increases stability and reduces rebound rotation by up to 50%, so you can keep them in a safe rear-facing convertible car seat for longer (up to 22.7 kg/50 lb).

As both a rear and forward-facing convertible car seat, the Radian 3RXT SafePlus protects as they grow, with SafePlus easy adjust 12 position headrest that offers a 22% increase in occupancy range from the Radian 3RXT. As they grow the Radian 3RXT SafePlus provides 6 layers of SafePlus Side Impact Protection without compromising the famous Radian 3-across slim fit in most midsize vehicles.

All these great features have been combined with SafePlus engineering, with the Radian 3RXT SafePlus All-in-One Convertible Car Seat subjected to a combination of the most rigorous crash tests to ensure the safest seat possible.

Parents can also expect the travel friendly traits Diono is famous for, including convenient fold and FAA approval for use on an aircraft. So, no matter where you go you can take Diono safety with you.

  • 10 Years One Car Seat – from Birth to Booster (1.8 – 54 kg/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 guide:
  • Rear-facing: 4–50 lb (1.8–22.7 kg) and whose height is 18-44 in (46-112 cm).
  • Forward-facing: 22–65 lb (10–29.5 kg) and whose height is 30-57 in (76-145 cm).
  • Booster: 40–120 lb (18–54 kg) and whose height is 40-57 in (101-145 cm).

Product Weight

13.8 kg

Product Depth

40.6 cm

Product Width

43.2 cm

Product Height

72.4 cm


Yes (SuperLATCH)

Seat Belt System

3 point seat belt or lap belt. Ok to use with over lapping seat belts, check that the lower anchor belt or seat belt must not rub on each other or interfere with each other when installing the seat.

Forward Facing


Rearward Facing


New Zealand Standard 'S' mark


Expiry Date

10 years from date of purchase (please keep receipt for proof of purchase)

Airplane Approved

FAA certified

Age Range

Birth – 8+ years (approx)

Height Range

Rear facing: 46 – 112 cm, Forward facing: 76 – 145 cm

Weight Range

Rear facing: 1.8 – 22.7 kg, Forward facing: 10 – 54 kg


5 point safety harness

Top Tether

Always use the top tether strap when forward facing if a tether anchor is available

Washable Covers

Yes refer to manual

Energy-Absorbent Foam


Side-Impact Protection

Yes, 6 layers





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