Tadpole

Diono Radian 3QX Ultimate 3 Across All-in-One Convertible Car Seat

$369.99

The ultimate 3 across All-in-One car seat from birth to booster (4 - 120 lb / 1.8 - 54 kg).

Featuring 3 stages of complete rear-facing protection and all new Diono Safe+TM engineering to provide the next generation in car seat safety.

What’s new for 3QX?

  • Suitable from 4 lb / 1.8 kg
  • Extended rear facing up to 50 lb / 22.7 kg
  • Easy remove covers - machine wash and dry
  • Improved rear-facing recline
  • Comfort+ memory foam cushion for improved seat base comfort
  • Safe+TM easy adjust 12 position headrest with 22% increase in occupancy space from the R series
  • Safe+TM steel core
  • Safe+TM headrest with built in side impact protection
  • Safe+TM side impact protection with extended sidewalls
  • Safe+TM steel anti-rebound bar
  • Safe+TM 2-in-1 infant positioning liner
  • Safe+TM anti-slip harness pads
  • Safe+TM newborn travel high wedge for optimum newborn positioning
  • Safe+TM roll-over tested
  • Safe+TM side impact tested
  • Improved headrest design made with high performance foam padding for child comfort
  • Premium soft fabrics and detailing
  • Latch and rear facing tether storage
  • Instruction manual storage
  • Improved seat base design with expandable seat width
  • Easy-access side storage for harness cleaning/replacement

What makes it great

3 STAGE REAR FACING PROTECTION
Features Safe+TM newborn travel high wedge, Safe+TM 2-in-1 infant positioning liner and Safe+TM steel anti-rebound bar to provide new levels of rear-facing protection to the original 3 across.

  • SAFE+TM NEWBORN TRAVEL HIGH WEDGE
  • Creates near lie-flat travel position for newborns while reducing head slump and keeping airways open. Simply remove as baby grows.
  • SAFE+TM 2 IN 1 INFANT POSITIONING LINER
  • Gives extra infant comfort and toddler body support. Simply remove as baby grows.
  • SAFE+TM STEEL ANTI-REBOUND BAR Reduces rebound rotation by 50%. One click connection to the seat base and fits against vehicle seat back. Prevents the seat from rebounding or “bouncing back” into the vehicle seat in the event of a collision.

SAFE+ ENGINEERING
Radian® 3QX is subjected to a combination of the most rigorous side impact and rollover testing to make sure we have the safest seat possible.

10 YEARS 1 CAR SEAT
With 4 ways to travel from birth to booster, the Radian® 3QX adapts as your child grows to offer a custom fit from birth to 120 lb.

REAR FACING FOR LONGER
Designed and engineered with all new Diono Safe+TM protection. Now you can keep your child rear facing for even longer up to 50 lb (approx. 4 years old).

SLIM-FIT DESIGN FITS 3 ACROSS
Built with our famous radian slim fit design, to fit 3 across in most vehicles without compromising child or passenger comfort.

SAFE+TM SIDE IMPACT PROTECTION
Built with 6 layers of EPS & EPP foam, high density plastic and steel reinforcement to make ultimate side impact protection, without compromising 3 across slim fit design in most midsize vehicles.

SAFE+TM STEEL CORE
All new upgraded mechanically engineered, reinforced steel core. Made from automotive grade high strength steel to shield and protect. Manages and dissipates energy.

SAFE+TM HEADREST
Contoured and engineered with the latest European side impact research and technology in crash energy management. Features 22% increase in headrest range from the Radian R series with built in side impact protection to improve child head containment in the event of a collision.

FAA APPROVED & FOLDS FOR CONVENIENCE
The only all-in-one car seat that folds for easy travel and transport, FAA approved for use on aircraft.


Seat Weight

25.8 lb / 11.7 kg

Overall seat dimensions (lowest position inches)

H 28" x W 17" x D 16"

Overall seat dimensions (lowest position cm)

H 71cm x W 44cm x D 41cm

Overall seat dimensions (highest position inches)

H 31" x W 17" x 16"

Overall seat dimensions (highest position inches)

H 80cm x W 44cm x D 41cm

Vehicle seat bite to front FF length

17” / 44cm

Inside shoulder width

12” / 31cm

Inside hip width

12” / 31cm

Inside seat depth

13” / 33cm

Rear facing installation depth

30”/ 76.2cm

Inside seat height
(base to accommodating)

26” / 67cm

External widest point (without Safe+ Side Impact Management Pod)

17” / 44cm

Rear Facing (RF) convertible weight limit

4 – 50 lb / 1.8 – 22.7 kg

Forward Facing (FF) convertible weight limit

22 – 65 lb / 10 – 29.5 kg

Belt Positioning Booster (BPB) Mode weight limit

40 – 120 lb / 18 – 54 kg

Belt Positioning Booster (BPB) Mode height limit

57" / 145 cm


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