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Diono Radian 3QXT FirstClass SafePlus
Our Review of the
Diono Radian 3QXT FirstClass SafePlus
Our recommendation: From 2 months until the seat is outgrown (average 7-8 years old)
A 3-in-1 car seat that can be used rear-facing, forward-facing, and in high-back booster mode
From 2+ months
Stand Out Features of this Car Seat
Seat is good for you if
Use caution if
Quirks to be aware of
Child Fit Information
Installation Information
Airplane Use
Videos
SITS Bottom Line
Similar Car Seats
Specifications
Diono
Product Information
Weight: 34.2lbs
Width: 17"
Highest Harness Height: 17"
Rear Facing Limits
Height: 18-44"
Weight: 4-50lbs
Head Height Rules: at least 1.5″ below the top of the headrest
Lower Anchor Connectors Weight Limit: 35lbs
Forward-Facing Limits
Height: 30-57"
Weight: 22-65lbs
Head Height Rules: ears must be below the top of the headrest
Lower Anchor Connectors Weight Limit: 40lbs
No Back Booster Limits
Highest Belt Guide Settings
19"
High Back Booster Limits
Height: 40-57"
Weight: 40-120lbs
Head Height Rules: ears must be below the top of the headrest
Other Important Details
Newborn Fit
not recommended; lowest harness height is too high for many newborns
Expiration Limit
8 years in harness mode, 10 years in booster mode
Crash Replacement Policy
replace after a moderate or severe crash
Harness
rethread
Lock-off
no
Vehicle Seat Protectors
This brand allows Diono mats:
Diono Grip It Car Seat Protector