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Even if you’re new to the whole parenting thing, you probably know the dangers of leaving loose items in your baby’s crib, and yes, that even includes blankets. Since blankets are known to cause accidental smothering because your baby can’t move it away from his or her face, blankets and infants do not mix well.
This just means that you’ll have to invest in lots of warm and comfortable pajamas for your newborn. But if that doesn’t seem like it’s doing the trick, you have plenty of the best baby sleep sacks to choose from.
A baby sleep sack is, mostly, a sleeping bag made especially for babies to keep them safe and warm while they sleep. In some case, the sacks can swaddle them, but since not all babies enjoy the feeling of being swaddled or enjoy it for too long, most baby sleep sacks are simply secure around your baby’s body, usually with just their head and arms free.
They’re able to feel cozy and comfortable throughout the night, and you don’t have to bend over backward with that understandable but very real parental worry.
Before going further, if you are looking for a TODDLER sleep sack (12 months+), check out our Toddler Sleep Sack guide.
Jump to a specific section
- 1. Best Sleep Sack Overall: HALO Sleep Sack Swaddle
- 2. Best Weighted Sleep Sack: Nested Bean Zen Sack
- 3. Carter’s Baby Microfleece Sleep Bag
- 4. Bon Bebe Wearable Blanket
- 5. Baby Deedee Sleep Nest Baby Sleeping Bag
- 6. Merino Kids Organic Cotton Baby Sleep Sack
- 7. Gunapod Sleep Sack
- 8. Shengwen Baby Sleep Sack
- Nested Bean vs Halo Sleep Sack
- Types of Sleep Sacks Explained
- Final Thoughts on the Best Infant Sleep Sacks
1. Best Sleep Sack Overall: HALO Sleep Sack Swaddle
It comes in multiple sizes to fit your baby right, and so there’s no danger of loose parts coming free. The adjustable fasteners keep the sack wrapped around your baby as snug or loose as you need it to be and there’s a bottom zipper (inverted zipper) to handle late-night diaper changes without needing to take off the entire thing.
- Available Sizes: It comes in either a newborn size for babies 6-12 pounds or small size for babies 13-18 pounds.
- Where To Buy: You can purchase the sleep sack on the manufacturer’s website and Amazon or in-store at Target and Walmart.
- The Best Part: Your baby can wear it more than just one way, so you can figure out which style suits them best.
- The Not So Great: The Velcro used to fasten the wrap around the blanket can become less efficient over time.
In addition to helping your baby sleep safer, the HALO SleepSack Swaddle helps baby sleep better, too. Its adjustable swaddle wrap immobilizes baby’s arms to prevent the 'Moro' or startle reflex.
2. Best Weighted Sleep Sack: Nested Bean Zen Sack
Like the Carter’s Baby Microfleece Sleep Bag, the Nested Bean Zen Sack is designed without long sleeves. So, your baby should still wear pajamas underneath, even if they’re made of thin material.
But what sets it apart from Carter’s and, from most other baby sleep sacks, is the gently weighted material on the front that’s designed to mimic the feel of your hand. Sometimes babies just need that reassuring touch, and with this sleep sack on, they can feel it, even if you’re not right there to provide it yourself.
The material itself is also plenty breathable so be able to warn around the year and not just in the colder months, so you’ll be able to get lots of use out of it for your baby.
- Available Sizes: You can find it in the 3-6 month and 6-12 month sizes.
- Where To Buy: It’s available on the manufacturer’s website and Amazon or in-store at Buy Buy Baby.
- The Best Part: The slightly weighted oval on top of the sack which mimics the feeling and weight of your palm is unlike anything on most other baby sleep sacks.
- The Not So Great: Once your child starts turning over, the sleep sack isn’t as useful and really can’t be used.
The Zen Sack exceeds safety standards. It has passed all mandatory and several voluntary tests. All materials are BPA, toxic and Phthalate free. Made from 100% luxuriously soft cotton for your baby's tender skin, it is washer and dryer safe. The weighted pad is filled with non-toxic poly beads, the same as you find in children's stuffed toys.
3. Carter’s Baby Microfleece Sleep Bag
It also zips all the way up to the neck with a covered snap button to keep it in place. Also, it comes in multiple prints and sizes to give you options and to get your baby the perfect fit. It also washes well in the washer so you won’t have to worry about the fabric pulling or shrinking after each wash. For some babies, it may fit a little large, which only means that your infant can grow along with the Sleep Bag.
- Available Sizes: It’s available in small for babies who are 6-12 pounds and medium for babies 12.5-21 pounds.
- Where To Buy: You can find it on the manufacturer’s website and Amazon or in-store at JCPenney.
- The Best Part: You can open it from the bottom to be able to change your baby’s diaper more easily.
- The Not So Great: Since it’s made of microfleece, the Sleep Bag can sometimes get a little too warm for your little one.
This sleepbag Zips from ankle to neck for easy changes. Worry-free safety tab keeps zipper away from baby's chin and neck · Ribbed cuffs keep sleeves in place.
4. Bon Bebe Wearable Blanket
It’s always a good idea to have to clothe your baby underneath their sleep sack. But the Bon Bebe Wearable Blanket already has long sleeves, so at the very least, you won’t have to worry about long sleeves on your baby before putting him or her in the sleep sack.
It’s made from 100% cotton, making it a soft and breathable fabric for your little one, and it also has snap buttons to keep it closed, which also helps in making it possible to open the sack from the bottom when needed. Plus, on Amazon, it comes in a pack of two, so you’ll have an additional sleep sack if one gets stained.
- Available Sizes: It’s currently available in size 0-6 months.
- Where To Buy: You can primarily find the sleep sack on Amazon.
- The Best Part: The cotton material is soft, breathable, and durable enough to withstand multiple machine washes as needed.
- The Not So Great: The snap button closures can be opened if your baby writhes around or moves their hands or feet around too much.
Made out of 100% cotton 2 pack wearable blanket set with all-over print design and snap front closure for easy on-off dressing.
5. Baby Deedee Sleep Nest Baby Sleeping Bag
The thick but breathable sack is made to fit and feels like a cocoon for your little one, and the straps have snap buttons for easy on and off. The zipper doesn’t open from the bottom. It does unzip all the way down so that taking your baby out of the sleeping bag is simple and you won’t have to pull it off, but instead unzip and open it to lift your baby out and up when taking them out of the sleep sack.
- Available Sizes: It comes in small for babies 0-6 months old, medium for 6-18 months, and large for 18-36 months old.
- Where To Buy: You can purchase the sleep sack on the manufacturer’s website and Amazon or in-store at Target and Buy Buy Baby.
- The Best Part: During cold winters especially, the sleeping bag will keep your baby’s feet warm and toasty.
- The Not So Great: If it’s not washed on the gentle cycle in your washer, you may run into the bag losing its shape or soft feel.
Unique cocoon shape, designed in New York, provides a cozy environment. Babies sleep better when they stay covered throughout the night. Parents sleep better knowing baby is comfy & secure.
6. Merino Kids Organic Cotton Baby Sleep Sack
With the fitted top and straps, your baby won’t be able to slip out of the sack in the middle of the night, which is the point. And if you want your baby to wear the sleep sack in colder temperatures, you can just layer pajamas beneath it to best suit your infant. Either way, it’s a win-win comfort situation.
- Available Sizes: The sleep sack comes in sizes 0-2 years and 2-4 years to grow along with your little one and keep them in the same kind of sleep sack over time.
- Where To Buy: You can buy the sleep sack on the manufacturer’s website and Amazon.
- The Best Part: It has two layers of 100% soft and breathable fabric.
- The Not So Great: The zipper on the sleep sack is relatively stuff, which can take away from the comfort.
The Merino Kids organic cotton baby sleep bag features the same award-winning design as Merino Kids merino sleep bags, with two layers of organic cotton pin-stripe interlock fabric, 100% natural and GOTS-certified organic, grown pesticide-free and manufactured without the use of harmful chemicals.
7. Gunapod Sleep Sack
This means that your baby can either have their legs open and free to kick around on the soft fabric of the sleep sack or you can keep it zippered closed. It also has large armholes to fit your growing child and snap buttons to take the straps on and off your baby’s shoulders.
Also, leaving the bottom open or opening the Winder Zip around the base enables you to take care of the middle of the night diaper changes without disturbing your baby.
- Available Sizes: It comes in size small for babies 0-9 months old, medium for 9-18 months, large for 18-24 months, and extra large for 24-36 months old.
- Where To Buy: You can buy the sleep sack on the manufacturer’s website and Amazon or in-store at Bed Bath & Beyond.
- The Best Part: All of the different ways to wear the sleep sack and adjust it make for a versatile sleeping bag for your little one.
- The Not So Great: The smallest size might feel relatively roomy, which isn’t necessarily ideal if your baby prefers a swaddling feel.
Keep baby covered and warm for super easy diaper changes in the cozy günaPOD Sack by gunamuna. This luxurious premium plush sleep sack will become your baby’s favorite lovey.
8. Shengwen Baby Sleep Sack
The Shengwen brand has a variety of different sleep sacks available for different needs, but this particular one, the Shengwen Baby Sleep Sack, is designed for colder months to keep your baby warm and soft inside of it.
Instead of having little snap button sleeves, it has long sleeves for added comfort and a zipper down the front that can also be unzipped from the bottom for your convenience. Your baby can even wear long sleeves underneath the sleeves of the sleep sack for added warmth and comfort. Regardless, the long sleeves are convenient when a lot of other sleep sacks are sleeveless.
- Available Sizes: It comes in sizes 0-6 months, 6-18 months, and 18-36 months.
- Where To Buy: You can primarily find the sleep sack on Amazon.
- The Best Part: The sleep sack is made of 100% cotton with a soft quilted interior.
- The Not So Great: Putting the sleep sack through the dryer may shrink it considerably.
Nested Bean vs Halo Sleep Sack
The HALO Sleep Sack is one of the “originals” when it comes to wearable blankets. But in recent years, Nested Bean has challenged them for the top spot. In fact, our product testing confirms how close these two are in terms of quality and effectiveness.
So which one is better?
There’s no clear black and white answer, but here are a few instances I would consider one over the other:
- The easiest to use? Go with the easy to get on and off HALO sleep sack.
- Emotional security blanket? Go with the weighted Nested Bean for anxious infant sleepers.
The key distinction here is that the Nested Bean offers a weighted blanket experience, recommended by occupational therapists and infants with sensory issues or just in need of added sleep security.
Types of Sleep Sacks Explained
What’s the difference between a sleep sack, sleep wrap, and weighted sleep sacks? I commonly get questions around the proper terminology, so here’s a primer overview of the market:
- Swaddle Sleep Sacks: These sleep sacks are designed as wearable blankets that leverage the swaddle mechanism. The key factor to recognize here is that these swaddles are not suitable after 4 months (whenever a baby can flip over). Some swaddle designs DO allow for arms out, allowing for use after 4 months.
- Sleeveless Sleep Sacks: These varieties are designed for infants to sleep without their arms constricted, meaning they are generally safer. That said, some infants prefer the security of wrapped arms, so it may not be the ideal solution for everyone. Generally these sacks feature an inverted zipper for quick diaper changes.
- Weighted Sleep Sacks: Just liked weighted blankets for adults, these weighted sleep sacks are designed to sooth anxious sleepers and provide extra security. Make sure to discuss this option with your pediatrician as some weighted sleep sacks might be TOO heavy and constrict breathing or cause overheating.
Final Thoughts on the Best Infant Sleep Sacks
There are so many different baby sleep sacks to choose from that it’d be almost impossible not to try one out for your little one.
And the good news is that if he or she enjoys the feel of one, you can eventually graduate them to a toddler-sized sleep sack which is designed to do the same exact thing, but just mad to fit your growing child.
And in the unlikely event that your child isn’t comfortable in any of these top baby sleep sacks, you can always opt to stick to footed pajamas. But they’re worth a shot, as they can keep your infant warm throughout the night while also giving you that sweet, sweet peace of mind.
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