Child Safety Seat Ease of Use Ratings


Are All Seats Safe?
All car seats rated by NHTSA meet Federal Safety Standards & strict crash performance standards. While all rated seats are safe, they do differ in their ease of use in four basic catagories:


Evaluation of Instructions

Vehicle Installation Features

Evaluation of Labels

Securing the Child


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Harmony Defender 360 (FF)



Manufacturer  /  Model NameHarmony Defender 360
Model Number  /  Manufacture Date0302002MRS  /  Jun 30, 2017
Harness Type5-pt
Weight  /  Height22lb - 65lb / 27" - 57"
Evaluation of Labels 1 stars
Supplemental sizing information is given in text only (not illustrated). There is not a full picture of a child properly restrained in the child seat directly next to sizing information on the labeling. The tether is not labeled in the illustrations depicting acceptable modes of installation. The belt routing path is not completely labeled. The labels do not explain how to use LATCH or the top tether in detail.
Evaluation of Instructions 4 stars
The instruction manual storage location may be difficult to find and cannot be accessed while the child is seated in the seat. The tether is not labeled in the illustrations depicting acceptable modes of installation. The user may need to read text in the manual in order to prepare the LATCH attachments for use.
Securing the Child 3 stars
The car seat was not fully assembled when it was removed from its packaging. When converting to this mode of use, there are multiple steps that the user will need to refer to in the user manual. When cleaning the seat, the harness must be unthreaded/rethreaded, loose parts may be generated, and hand tools are required to reassemble the seat.
Installation Features 4 stars
The car seat is equipped with hook-style LATCH attachments which may require twisting to remove from the lower anchors in the vehicle. The storage locations for the LATCH belt and/or tether strap are not obvious and may be overlooked.
Overall Ease of Use Rating 3 stars

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