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radian 3QXT & quantum2 bundle

The exclusive deal includes both the radian 3QXT All-in-One convertible car seat and the 3-in-1 multi-mode stroller quantum2 to provide the ultimate birth to big kid bundle!

radian 3QXT

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+™ engineering to provide the next generation in car seat safety.


quantum2 stroller

Versatile, convenient, and suitable from birth, quantum² provides agile handling and ready to tackle the hustle and bustle of the city. Featuring a “one step” break, 3 tier canopy with ventilation, and full suspension wheels, quantum² is designed for every adventure.

$949.98 $399.99


pick your bundle

radian® 3QXT



Diono quantum 2 stroller in yellow sulfur.
Diono quantum 2 stroller in copper hive.

what’s the difference?

Additional 2 year warranty*

Receive an additional 2-years warranty on all car seats and strollers purchased from *T&C’s apply

FREE Shipping on orders over $200*

Diono proudly offers free shipping on orders over $200. *T&C’s apply

Join the Very Important Passenger Club

Unlock exclusive news, offers and discounts on all products.

1-2-1 Virtual Car Seat Fitting

Book a 1-2-1 virtual car seat fitting with a member of our car seat safety team