Question Are harnessed carseats really safer than boosters for older, under-40lb children?

megan35

New member
I know the mantra in the U.S. is to keep kids harnessed for as long as they fit in their carseat, and certainly until at least 40 pounds. But the more I read the more I question whether the evidence supports this--and whether harnessing older but lightweight children (who are mature enough to sit properly in a booster) is actually LESS safe than putting them in a highback booster.

I have a 6yo 38-pounder. I'm happy to continue harnessing but am unconvinced that a harness is safer or even as safe, at this age and weight, as a high-back booster. Of course this is predicated on my child's ability to sit appropriately.

I've done numerous searches online, including reading abstracts from medical journals, and still don't see the evidence to support extended forward-facing. Then there are articles like this one that give me pause: http://www.thecarcrashdetective.com/2017/10/when-booster-seat-safe-sweden.html/

Can those on the forum who are a lot more expert than I am convince me? Why keep a child like mine harnessed, and where's the data to show it's as safe as or safer than boostering? TIA.
 
ADS

ketchupqueen

CPST and ketchup snob
Staff member
There's no evidence that a 6 year old is less safe in a booster than harness if he can sit properly. Some believe there's an edge to a booster, even. We have no comparative evidence. We do know that both are very safe if used properly. That's the key.

So as long as she meets the minimums and can sit 100% of the time without moving in a way to be out of position or introduce slack in the belt, go ahead and booster and don't worry about it! Typically children are ready between 5 1/2 and 7, maturity-wise, so you know your child. If your child is ready, go ahead and booster, as long as you get one with lower minimums and use it properly (proper assembly, check fit in vehicle, check belt fit on child, etc.)

While we don't know which is "safest" as an absolute we know that statistically there's not a big difference. It's a very safe choice that you can feel good about. :)

The biggest gap in safety is unrestrained children. After that, children in a seatbelt only who still need a booster. So anything properly used is a good choice at this age!
 

ketchupqueen

CPST and ketchup snob
Staff member
(I would add- if you are in one of the few states with a 40 lb booster minimum, you should of course follow your state law.)
 

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