Diono Radian 3QXT Ultimate 3 Across All-in-One Car Seat

Authorized Dealer

Color: Black Jet
Sale price$449.00

 SKU: 51220-NA-01


The Radian 3QXT model is an elite standard convertible car seat. It's created with multiple layers of durable material, and a steel rebound bar, tested in the most severe car crashes for optimal safety. With four optional positions in booster or car seat configuration, weight capacity of 120 lbs, adjustable seat, headrest, and 5 point harness loops, it is bound to support endless years of safe travel. Its compact structure enables 3 seats to be aligned in a row, with guaranteed comfort. It also includes an extra newborn protective insert, cushioned harness pads, a soft liner, and a high wedge to keep your baby in a comfortable flat back position. The seat fabric can easily be removed for washing.


  • Fold-flat for easy carrying & storage.
  • Certified for use on aircraft as they are FAA approved.
  • Easy click installation.
  • Newborn supportive inserts and a wedge enabling flat back position.
  • Anti Rebound bar along with 6 layers of durable protection for maximum safety.
  • Reinforced steel cup holder. 
  • Anti-slip 5-point padded adjustable harness.
  • Installed technology absorbing the pressure of abrupt stops.
  • Adjustable headrest, and expandable sides for maximum comfort. 
  • Steel frame, high-density plastic, polyester knit, EPP, EPS
  • Machine wash and dry.
Dimensions & Weight
  • 16" x 17" x 28" 
  • 25.8 lbs
  • 4-50 lbs rear capacity to prolong safest travel position for infants.
  • 22-65 lbs forward-facing.
  • 40-120 lbs Booster mode.
  • Maximum height 57".

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