How to Keep Baby Warm at Night! Sleep Without a Blanket

There is nothing cozier than a crisp fall night! I always looked forward to cooler night time weather, but soon after having kids I constantly wondered “how do I keep my babies warm at night?” As a new mom I wasn’t sure the best way to dress a newborn, infant or toddler to stay warm without putting a blanket in his or her crib!? 

Thankfully after three children, I found a solution that works!

Over the years I’ve tried different sleep sacks, onesies, and wool outfits and found essentials we can’t live without. With 3 babies, we had to learn how to dress our kids for all different kinds of weather!

We want our baby to be safe at night, but like any first-time mom I worried “Is she too hot?” or “Is she too cold?”

So in this post, I share with you three ways to keep your kids warm at night during the winter without blankets or chemicals. I also have a special discount code for one of the sleep sacks, you don’t want to miss it below!

These tips can be used for babies as well as older kids.

Our 3-year-old son never kept a blanket on at night! We had to get creative so we weren’t going into his room every hour to adjust his blanket since he was getting cold. 

We don’t keep an extremely warm house in the fall and winter months and for safety reasons, we didn’t put blankets in the cribs when our kids were infants. 

What are the best ways to keep your baby warm at night?

Here are the three ways we keep our kids warm in winter. Also note, we try our best to avoid flame retardant pajamas. They are often soaked in chemicals and can impact your children’s health.

The first option: the sleep sack

For warmer weather, we love the cotton HALO SleepSack or the Burt’s Bees Baby Organic cotton sack. I like that both of these sleep sacks are made from 100% cotton and they are the perfect top layer with long-sleeved pajamas.

Through the years, we have used sizes ranging from about 1-month-old to 2-2.5 years of age.

The sacks are super cozy and since our kids did not like to be swaddled it was a good alternative to a blanket. These are the right thickness to be used for fall or spring weather, but once it gets colder you’ll want something warmer. 

A warmer option is the Woolino 4 Seasons Wearable Blanket (2 months to 2 years). They also have it in a toddler size (from 2 to 4 years of age).

A Discount Code on Sleep Sacks!

If you are an Amazon shopper you can purchase the wearable blanket here.

Or you can buy right from and use my special discount code INSPIREDMOTHERHOOD10 to get 10% off your order.

I know, it’s expensive and I hesitated to buy it, but it was SO worth the investment. It is incredibly soft and cozy. And we’ve used the same sleep sacks with multiple kids. Better yet, we could still probably sell them to someone else when we are done. They have stayed in remarkable shape!

These are so worth the investment!

Our children have loved sleeping in their Woolino sleep sacks and now I recommend it to any new mom. You can actually wear them year round and they have held up through multiple kids using them in our family.

Besides the durability and coziness, I recommend the Woolino options because merino wool helps regulate children’s body temperature and we use it year-round. We used the toddler-size sack until our son was 3.5 years old.

Again if you want to buy from use my discount code INSPIREDMOTHERHOOD10 to get 10% off your order!!

He loved it and again I didn’t have to worry about the blanket falling off him at night. And him waking me up because his blanket was “messed up.” This mama loves her sleep! 

Clever ways to keep your baby or toddler warm at night without needing a blanket! Create a safe sleep environment for your baby.

Best Sleep Sacks to Keep Babies Warm & Safe

Another warmer option is the fleece HALO SleepSack. It’s less expensive which is a plus and it’s cozy. Though it could possibly be easier to overheat in because it doesn’t breathe like cotton or merino wool. So we alternated this with the wool sleep sack. 

BONUS TIP: Consider the crib sheets or toddler sheets you are using for your kids.

We typically like Burt’s Bees Baby crib sheets because they are a soft 100% organic cotton jersey material. Plus they won’t break the bank. Though in the winter I’ve used some organic flannel sheets and 100% cotton flannel sheets. It does seem to make the bed extra cozy!

The second option: layer clothing!

We chose this option when our son was first born. He didn’t like being swaddled and I wasn’t sure how to keep him warm at night. So I’d put a snug Burt’s Bees Baby onesie or bodysuit on first, then layer with a warmer sleeper.

We also love the Hanna Andersson pajamas. They are so cozy and a bit thicker. For the spring and fall, this was perfect. 

*Get 20% off your first Hanna Andersson order (then we get 20% off too!)

For cooler months you may want to consider a merino wool coverall. We used this with our daughter and son. It was snugger than a sleep sack (which made me feel like it was a bit safer) and the wool helped regulate their temperature. So they never got too hot or too cold.

This is the one we used, but I also like the Disana pants and the Engel romper. Again these will be investments, but you can use it for years to come and with multiple kids.

RELATED: How to Keep Your Baby Warm Outside This Winter

Sleep Options Besides Blankets for Babies

The third option: wool pajamas.

Above I shared our favorite wool sleep sack and wool overall, but the other option is wool pajamas. There are so many to choose from so how do you find the best? We love merino wool because it is breathable and provides natural temperature regulation (see more benefits here). 

It is more expensive than cotton pajamas, but you don’t have to wash them as often and they dry quickly! Instead of buying 10-footed pajamas buy 1 or 2 wool pieces and you are set. Again you can wear the wool night after night without washing it. Also, it’s more absorbent than other materials.

So when my son used to leak through his diaper at night, it wouldn’t get all over his crib with the merino wool. And yes we’d wash the wool if got covered in baby fluids! 

Not sure how to keep your baby warm at night without using a blanket? Keep baby safe with these 3 brilliant ways to keep your baby warm!

Here are a few of our favorite wool playsuits and pajamas. The Woolino pajamas. The Janus playsuit. Lastly, the Engel romper overall.

There are the three ways we keep your kids the correct temperature at night without worrying about them getting tangled in a blanket. 

So what about you? We’d love to hear from you in the comments below.

How do you keep your baby warm at night? Do you have a favorite sleep sack?

Not sure how to keep your baby warm at night in the winter? You don't need to use blankets! Here are 3 ways to keep your baby the right temperature sleeping at night.

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  1. I am so happy you are following safe advice with no bumpers, toys or blankets in your babies crib. Thank you for doing that. I see too many blogger moms posting pictures with their babies in unsafe cribs I just want to scream.

    1. Oh gosh I thought about that since the picture shows my daughter sleeping on her tummy. Though at this age she was old enough to roll both ways and she always preferred her tummy.

  2. We have always done sleep sacks!! As she is almost 1, I think about letting her sleep with a blanket now, but she just moves around so much I know it won’t stay on her! The slee sacks are perfect!

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