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

Authorized Dealer

Color: Black Jet

Sale price$399.99

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 rigid car crashes, for optimal safety. With 4 optional positions in booster or car seat configuration, weight capacity of 120 lbs, adjustable seat, head rest, 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. To maintain cleanliness, the seat fabric easily removes 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 pressure of abrupt stops.
  • Adjustable head rest, 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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