Why You Should Never Put A Kid Wearing a Puffy Coat In a Car Seat

Bulky winter coats create enough slack in the shoulder straps to put your child at serious risk.

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Parents make a lot of mistakes when it comes to car seats. Almost 40 percent turn the seat around from rear- to front-facing too soon. (The AAP recommends the child be at least two-years-old.) More than 64 percent forget to secure the top tether when they do. And according to one study, 77 percent just straight up install the seat incorrectly to begin with. But one of the biggest mistakes parents make, particularly in cold-weather climates, is one they don’t even realize: They put their child in the car seat wearing a big winter coat or snowsuit.

Admittedly, the idea of strapping a coatless child into a freezing car (and seat, for that matter) when it’s 10 degrees outside seems like a surefire way to earn a visit from family services. Why would a parent risk exposing their child to frostbite or hypothermia? It doesn’t make sense. But as counterintuitive as it may sound, there’s a simple reason ⏤ puffy or bulky winter coats immediately reduce car seat’s effectiveness and put a child in danger should there be an accident.

How is that possible? Easy, puffy winter coats are filled with bulky insulation ⏤ that’s what makes them warm. Unfortunately, that same insulation creates a ton of space between a child’s chest and the car-seat strap, which should fit snuggly when tightened. It’s actually something of an illusion for parents. When the harness is secure, a child wearing a big coat feels just a tight in the seat as they would if they were wearing a t-shirt. Even the popular pinch test ⏤ in which you check for excess slack in the harness by pinching it with your thumb and forefinger ⏤ works. It feels correctly secured.

But it’s not even close to being tight enough. In fact, according to experts at the Car Seat Lady, an organization dedicated to child safety, a standard puffy coat adds four inches of slack to a car-seat harness. That’s the difference, they cleverly point out, between a pair of pants with a 34-inch waist and one with a 38-incher. Huge difference, as anybody who’s ever lost some weight knows. That excess slack not only allows the harnesses to easily slide off the child’s shoulders in an accident but also puts the child at risk of being thrown clean out of the seat altogether. The Today Show ran some crash test dummies to demonstrate a few years back and the results were dramatic. The coat remained in the seat, the child did not.

How Do You Tell If Your Kid’s Coat Is Too Big?

So then, how big is too big when it comes to your kid’s coat? And what about that fleece jacket, does it count? There’s an easy way to find out. Dress your child in their coat or jacket, zip them up, and safely secure them in the car seat as if you didn’t know you were making a potentially fatal mistake. Make sure the shoulder straps are tight. Don’t drive anywhere. Instead, unfasten the straps without loosening them ⏤ not even a hair ⏤ and remove the child from the seat. Take the coat off and return the kid to the car seat. Clip them in but don’t tighten it. How much slack do you have in the shoulder straps? If the child still fits securely ⏤ chest clip at armpit level, straps snug to the body, no slack can be pinched ⏤ the coat is fine. You’re in the clear. More likely than not, however, you’re mind will be blown by the amount of excess space the coat was occupying.

How Do You Keep Them Warm if They Can’t Wear a Coat

Now that you’re not putting your infant, toddler, or kid of any other size into a car seat wearing a winter coat, you still have to keep them warm. It’s your parental duty. And it’s still 10 degrees out. In addition to dressing them in layers, you essentially have two old-school options, and one new, depending on the size of the baby:

  • Cover them with blankets. You should always have an extra blanket in the car in the winter anyway, in case of an emergency breakdown, but the key benefit to layering them with multiple blankets is that you can remove each as the vehicle warms up. That way you keep the child from overheating. The number of blankets you use, obviously, depends on how cold it is and how long the drive is.
  • Cover them with their coat. They can either use the coat like a blanket or if they’re older and want to be cool, they can wear it backward.
  • Cover them with an attachable car-seat cover. This is the ideal choice for newborns and infants since it won’t bulk up around the face. Just make sure that it fits over the car seat and in no way attaches through the shoulder harnesses.

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