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Radian 3RXT Red

Radian 3RXT Red

Product Code: 3RXTRED
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Radian 3RXT Convertible Car Seat by Diono


Unmatched safety. All-in-one simplicity.
Your child’s security is the top priority. Diono engineered the Radian® 3RXT with premium, innovative features like a steel alloy frame, aluminum reinforced sidewalls, energy absorbing EPS foam and a reinforced adjustable head support to keep your little one protected and comfortable.

Some say three’s a crowd. We say, the more the merrier! The Radian® 3RXT car seats fit 3-across in most mid-size vehicles.


  • Lovingly engineered: The Radian® 3RXT is fabricated using super strong automotive high strength steel, engineered into a dual spine. This unique core manages and dissipates energy and provides an unyielding structure to protect your baby. The Radian 3 RXT shields your precious child through Super side impact protection with aluminium reinforcement.
  • Three’s not a crowd: For safety that fits 3 across the Radian® 3RXT packs the innovative safety features into a sleek and slim design that allows you to fit three across (in most mid-size vehicles). Now the whole family can travel, together.
  • First Class comfort: Inspired by the best European fashions, the Radian® 3RXT has soft fabric covers and a memory foam seat base bottom. Lined with thick energy absorbing foam, comfort and safety go hand in hand. A tailored infant support cushion and a cup holder are included.
  • Extended rear-facing: The Radian® 3RXT keeps children comfortably rear-facing from 2.2 - 20.4 kg for the safest possible position. Premium, plush head and body support cushions are included for newborns and infants.
  • Room to grow: Accommodates forward-facing children up to 29.4 kg in a 5-point harness and converts to booster mode for kids 22.6 - 54.4 kg. The aluminum reinforced, adjustable head support and sidewalls provide additional side impact protection.
  • Worth the Weight: Diono convertible car seats are made from steel for safety you can feel. The fully integrated steel frame is wrapped in thick engineered plastic to withstand severe crash forces. Deep, aluminum reinforced sidewalls provide excellent side impact protection, while energy absorbing EPS foam surrounds your child for ultimate safety. Diono car seats are definitely worth the weight.
  • SuperLATCH™ Installation: Diono's unique SuperLATCH™ system makes installation easy and secure. An audible click and visual indicator let you know when the connectors are locked.
  • Side Impact Protection: Diono have your child’s safety covered. Radian® 3RXT seats feature deep, aluminum reinforced sidewalls that extend straight forward and are lined with thick, energy absorbing foam. Diono performed rigorous side impact testing to achieve the proper size, shape and strength that best protects children from side impact forces.
  • Safe Stop®: The patented Safe Stop® harness component is a load-limiting device that absorbs energy in a crash. The unique design offers an additional layer of protection by reducing impact to a smaller, forward-facing child.
  • Rear-Facing Tether: As safety experts, Diono think of every precaution. Rear-facing tether capability helps reduce seat rotation during an impact. This unique feature is not found on every car seat. Diono built it in here for an extra layer of protection when your child is rear-facing.
Product Dimensions
Weight12 kg
Depth40.6 cm
Width43.2 cm
Height72.4 cm
Child's Age, Height & Weight
Age RangeBirth - 8+ years (approx)
Height RangeRear facing: 112 cm or less. Forward facing: 144 cm or less. Booster: 144 cm or less.
Weight RangeAs rear facing: up to 20.4 kg, As forward facing with harness: up to 29.5 kg, As booster: up to 54.4 kg
Installation Method
IsofixYes (SuperLATCH)
Seat Belt System3-point seat belt or lap belt
Top TetherAlways use the top tether strap when forward facing if a tether anchor is available
Rearward Facing2.3 - 20.5 kg
Forward Facing9 - 54 kg
Safety Standard
New Zealand Standard 'S' markYes
Safety Features
Side-Impact ProtectionYes
Energy-Absorbent FoamYes
Extended Features
Expiry Date10 years from date of purchase
Airplane ApprovedFAA cerified
Harness5 point safety harness

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