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Winter Sleep Sacks

Updated November 2018

Can you believe winter is just around the corner again? HOW! As we approach the frosty months in Seattle, the temperature keeps dropping. I don’t know about you, but I am ALWAYS worrying about my baby being warm enough at night. Luckily, a warm winter sleep sack is the answer.

Who’s with me?

Below are a few of my favorite winter weight, wearable blankets to take you through the fall and chilly cold winter (priced lowest to highest). See also: “regular” wearable blankets.

Note that these are designated with a “TOG factor,” which denotes the level of thermal insulation used in the textile trade. They range from 0.5 to 3, with 3 being the warmest.

Halo Winter Weight Sleepsack ~ $34

My babes have worn HALO since birth, so I’m a big fan. Out of all the HALO swaddles and sleepsacks I’ve purchased, their “winter weight” sack is my fave. It’s their heaviest weight (TOG 2.5), made of super soft cotton, (doesn’t pill after washes) and has a comfy quilted interior. My only qualm is that I wish the sizing went through 24 months; we are bummed we’ve grown out of ours!

Winter Sleep Sack - Halo

Related: Best Kid’s Snow Boots

Hanna Andersson Baby Wearable Blanket ~ $54

In the midst of my search for a winter sleep sack, I discovered this gem from Hanna Andersson! Available in grey, cream and red. Not only is this sack gorgeous, but it’s amazing for climates where it gets freakin’ COLD. The outside is a quilted cotton and the zipper conveniently runs downward. Who wouldn’t want to sleep in a bundle of sherpa fleece?!

Winter sleep sack

Baby Deedee Sleep Nest Teddy ~ $42 – Top Pick

Full disclosure: I received the Sleep Nest Teddy as a gift from Baby Deedee, and thank goodness I did. At ABC Kids Expo in October, I mentioned I was rounding up winter sleep sacks for our readers and they said I HAD to try the Teddy. They were so right!

I love the shoulder snap openings the sleep nest is known for and the over-sized, dual-entry zipper. The best part is that I have washed it countless times at this point and the fleece is still lovely and plush. This is my current fave for my 1-year-old — he sleeps so well in this cozy sack (TOG Factor 2.5).

Winter sleep sack - baby deedee

Gunapod® Bamboo Duvet Sack ~ $49 – Most like an actual duvet!

This versatile sack has features we’ve all thought about during a middle of the night diaper change. It literally unzips across the entire bottom of the sack for complete open access. SO GOOD! This sack is definitely made for cooler climates (2.6 TOG), but the bamboo fibers are also temperature regulating to help prevent overheating (MUCH better than polyester!!).

You can also choose to leave the bottom zippers a bit open to allow extra airflow if you wish. File this under, “why can’t I get one in my own size?” This sack is awesome and very highly rated. Best of all, it goes up to 36 months!

Winter sleep sack - Gunapod

Kip & Co. Sprinkles Rainbow Sleepsack ~ $55 – Most Beautiful!

Winter sleep sack - Kip & Co

New this year from Australia, we came across Kip & Co. at the ABC Kids Expo in Vegas this fall. I walked by their booth and stopped dead in my tracks: gorgeous!

I love the vibrant colors they use in their designs (they basically inspired me to re-decorate my home, but that’s another story!) and I LOVE their thick, winter weight sleep sack (TOG factor 2.5). Their prints are beautifully bright and the sizing will take you far. My personal fave feature: the arm openings have a snap to adjust for snugness as baby grows. Brilliant!


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See also Wearable Blanket Smackdown

This article has 12 comments

  1. I love all your recommendations but my husband was dead set on getting a down filled sleep sack (he’s Canadian so anything to do with cold is automatically fixed with large amounts of down). So we searched high and low and found a wonderful down sleep sack from milk and honey co. I promise I am in no way affiliated with them, I just really like their product. The shell is cotton, the fill is plush and lovely, the snaps and zippers are cleverly situated to grow with baby and keep the down away from her face even on her twistiest nights. Last but not least, it keeps her warm! We have an old house so the insulation needs updating and it can get very very cold at night, even with space heaters. I do not worry about her getting cold with this also sack and she sleeps comfortably all night (she is 6 mos). Anyway, I think it would make a great addition to the winter also sack lineup you have here. https://themilkandhoneyco.com/

    • Hi Alexa! Thank you so much for this recommendation. We’ll be sure to check it out!

    • Thank you for this comment/recommendation!! I’m going to be in a house that’s too cold for a 2.5 tog and a down sleep sack seems a good alternative! The Hanna Anderson one above seems like it could be good too, but I can’t find a tog rating for it anywhere

  2. Do you know the TOG rating for the Hanna Andersson?

  3. Any with sleeves? I’m always worried his little arms will be cold

  4. So torn between the Baby Deedee Sleep Nest and the Teddy…they seem really similar in many ways (snaps at the top, big zipper, tog 2.5), except for the quilted vs fleecy outer material.
    So, which do you think is better?

    • Hi Sarah! Both are pretty similar as you mentioned. I personally love the Teddy as Baby Deedee’s fleece is a really nice quality. It washes really nicely and stays super plush. – Kristen

  5. Would these be considered to be warmer than merino wool sleep sacks? Trying to decide if I need to upgrade for winter!

    • Hi Kate! Great question, all merino wool products have a different TOG, you’ll have to reference the manufacturer when you’ve decided on a product. For reference, the sleep sacks mentioned in this article are around a 2.5 rating. Unless your baby’s room drops below 15 degrees F, you shouldn’t need to go above a 2.5.

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