3 yo in Graco Affix


New member
I am looking for some links to help explain the risks of putting a 3 yo in a Graco Affix. The seat requires 38” height and over 30 lbs, which the child fulfills. I feel in my gut that this is not the safest setup, but it would help to have an article that presents the risks to give to my MIL.



New member
A 3yo is much safer in a harnessed seat. Not only is it safer to wait until the child is older for a HBB for bone development, but it's rare to find a 3yo that will stay seated correctly with the freedom the seatbelt will give (compared to a 5-point harness.

Here are a couple of links with more info:

Also, depending on what state you're in it may be illegal (some state laws say a child must be 4yo or 40lb before using a booster).


New member
This is what I found about AZ law. It didn’t seem to specify what type of seat:

Must be in child seat: 4 years and younger; children 5 through 7 who are 57 inches or shorter


Well-known member
This is what I found about AZ law. It didn’t seem to specify what type of seat:

Must be in child seat: 4 years and younger; children 5 through 7 who are 57 inches or shorter

Personally, I find the fact that it's illegal in some states and some countries (Canada) to still be a good argument for it not being safe. Laws are behind what we know to be safe and some places have gotten there before AZ, but that doesn't make it safe or change the laws of physics just because you've driven over that arbitrary state line. Depending on how stubborn MIL is, she might be receptive to understanding that. On top of that, a lot of 5yos lack the impulse control to sit properly 100% of the time, so it's unfair to expect a 3yo to take on that responsibility.

P.S. I'm speaking more matter of fact knowing that you aren't in favor of putting a 3yo in a booster. I mean no offense. Good luck! Finally, if it's your kid, then she doesn't have a say anyway. ;) Be firm.


New member
I shared the links, and talked about my concerns in person. Thanks for the support. It’s not for my children, but for my nephew. The silly thing is that she has an evenflo sureride that I recommended a year or so ago, and that’s a high harness seat, so he would not have outgrown that one yet.

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