Tadpole

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

$399.99

The ultimate 3 across All-in-One car seat from birth to booster (4 - 120 lb / 1.8 - 54 kg).  Featuring 4 stages of complete newborn protection and all new Diono Safe+TM engineering to provide the next generation in car seat safety.

What’s new for 3QXT?

  • 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
  • easy adjust 12 position headrest with 22% increase in occupancy space from
  • headrest - with built in side impact protection
  • side impact protection with extended sidewalls
  • steel anti-rebound bar
  • 2-in-1 infant positioning liner
  • anti-slip harness pads
  • newborn travel high wedge for optimum newborn positioning roll-over tested
  • side impact tested
  • rear impact tested
  • tested using 2x impact force required by US FMVSS 213
  • side impact management pod
  • newborn harness pads
  • newborn protection insert
  • 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 radian® 3QXT great?

4 STAGE COMPLETE NEWBORN PROTECTION

Features Safe+TM newborn travel high wedge, Safe+TM newborn protection insert, Safe+TM 2-in-1 infant positioning liner and Safe+ newborn harness pads to provide a custom fit from birth.

  • SAFE+ 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+ NEWBORN PROTECTION INSERT
  • Made from energy absorbing materials to support and protect. Super soft padding for extra newborn comfort. Simply remove as baby grows.
  • 3. SAFE+ 2 IN 1 INFANT POSITIONING LINER Gives extra infant comfort and toddler body support. Simply remove as baby grows. from rebounding or “bouncing back” into
  • 4. SAFE+ NEWBORN HARNESS PADS Small sized newborn harness pads for added safety and comfort.

SAFE+ ENGINEERING
Radian® 3QXT is subjected to a combination of the most rigorous crash tests; front, rear, and side impacts, and rollover test to make sure we have the safest seat possible.

10 YEARS 1 CAR SEAT 
With 5 ways to travel from birth to booster, the radian® 3QXT 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+ SIDE IMPACT MANAGEMENT POD
Designed and engineered following the latest European research and technology in crash energy management. The pod is placed on the side of the car seat facing the door and is engineered to channel energy around the back of the car seat and away from the child in the event of a side impact.

SAFE+ SIDE IMPACT PROTECTION
Featuring 8 layers of Safe+ side impact protection (with Safe+ Side Impact Management Pod included.) Engineered with interlocking EPS & EPP foam, high density plastic and steel reinforcement to create ultimate side impact protection, without compromising 3 across fit in most midsize vehicles.

SAFE+ STEEL ANTI-REBOUND BAR
One click connection to the seat base and fits against the vehicle back seat. The Safe+ steel anti-rebound bar prevents the seat from rebounding or "bouncing back" into the vehicle seat. Reduces rebound rotation by up to 50%.

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 and aircraft certified.

Overall Age/Weight Range

Suitable from 4 - 120 lb / 1.8 - 54 kg

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 

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

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