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Diono Radian 3R SafePlus

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The Original 3-Across All-in-One Car Seat upgraded edition. Updated with 12 improvements from the original Radian 3R.

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The original 3-across all-in-one convertible car seat with SafePlus™ engineering

The Original 3-Across All-in-One Car Seat upgraded edition. The All-in-One Car Seat just got better. Updated with 12 improvements from the original Radian 3R, the Diono Radian 3R SafePlus features Diono SafePlus engineering, SafePlus Easy-Adjust 12 Position Headrest and improved SafePlus Side Impact Protection for complete protection from birth to booster (now suitable from 1.8 – 54 kg/4 – 120 lb.)

Lovingly engineered with the improved SafePlus Steel-Core, and as both a rear and forward-facing convertible car seat, the Radian 3R SafePlus protects as they grow, with SafePlus Easy-Adjust 12 Position Headrest. The new and improved Radian 3R SafePlus features energy-absorbing Side Impact Protection and extended side walls to reduce the impact of side crashes, all without affecting our slim fit 3-Across design in most midsize vehicles.

The Radian 3R SafePlus comes with Anti-Rebound Bar slots for optional Anti-Rebound Bar (sold separately) for added rear-facing safety.

Radian 3R SafePlus All-in-One Convertible Car Seat is subjected to a combination of the most rigorous crash tests to ensure the safest seat possible. In addition to our regular extensive crash testing, we test over and above – including roll-over and side-impact tests, to achieve results above and beyond the current Federal standards. Our Easy-Click SuperLATCH system (UAS Compatible) makes installation easy and super secure.

Radian 3R SafePlus now comes with an XL Steel-Reinforced Cup Holder to keep drinks and snacks handy on the go, and as travel car seat experts, Diono has naturally built-in super portable and convenient features to the Radian 3R SafePlus with travel fold for easy transport and storage and easy remove machine washable covers. The radian is also aircraft certified (FAA approved), so you can take safety with you wherever you go.

  • 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!
  • Rear Facing for Longer – lovingly engineered to keep your child rear-facing up to 22.7 kg/50 lb, with SafePlus™ Engineering.
  • 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).

Black Jet, Black Jet – BULK

Product Weight

13 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

Rear-facing – Optional (tether connecting strap or anti-rebound bar sold separately). Forward-facing – Always use the top tether strap 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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