13 Best Sleep Sacks for Babies

13 Best Sleep Sacks for Babies

Once your tiny tot outgrows sleeping wrapped in a swaddle, burrito-style, it’s time to keep them cozy in a sleep sack. Basically, sleep sacks are wearable blankets that fit babies like mini sleeping bags on their bodies. The best sleep sack for baby, whether in winter or warm summers, is more than just an adorable mini sleeping bag. They’re designed thoughtfully to help lessen the risk of SIDS (sudden infant death syndrome). What’s more, sleep sacks, a.k.a. sleep bags or wearable blankets, are a safer alternative to loose blankets in the crib. In fact, under AAP’s (American Academy of Pediatrics) list of safe sleep guidelines, loose blankets are a major no-no.

Furthermore, sleep sacks are made from various materials, right from wool and fleece to cotton and muslin, and come in newborn-friendly picks to footed options for tots. To that end, here are the 13 best sleep sacks for babies, including war, winter, and summer ones.

KYTE BABY Unisex Bamboo Rayon Sleeping Bag


The KYTE BABY Unisex Bamboo Rayon Sleeping Bag is the best sleep sack for baby. This sleeping bag is available in many sizes and colors and is safe for babies who’re newborns and up to 3 years old. What’s more, it’s made from super-soft bamboo with just a hint of spandex. So, it’s a warm baby sleep sack that’s breathable and cozy. This bag goes on and over the infant’s shoulders and features a diagonal double zipper. So, not only does it allow for easy access for diaper changes, but it also keeps the blanket squarely and firmly in place. It might be hand-wash only, but this sleeping infant bag is an excellent choice for tiny tots with sensitive skin.


  • Three thermal resistances.
  • Silky smooth fabric.
  • The diagonal double zipper keeps it in place.
  • Comes in multiple colors.


  • Hand-wash only.

Mama Cheetah Adjustable Swaddle Blanket Wraps


The Mama Cheetah Adjustable Swaddle Blanket Wraps is the best summer sleep sack for baby. Made from lightweight and 100% organic cotton, this sleeping bag is designed for the teeniest and tiniest of babies. Basically, it’s a swaddle and sleep sack combo that keeps preemies that weigh up to 7 lbs safe and cozy. What’s more, the cotton build keeps your baby warm enough but also has tons of breathability to prevent overheating. So, how to go about using it? All you need to do is tuck your infant’s feet into the little pouch and wrap the wings around their arms, using the Velcro straps to secure it. When you want to do late-night diaper changes or checks, you only need to untuck your baby’s feet. So, you don’t have to go through undoing their swaddled arms.

Are you having trouble feeding your preemie baby? Here are some of the best bottles for preemies.


  • Preemie-friendly.
  • Adjustable design
  • Easy for diaper checks and changes.


  • Suitable only for preemies.

Burt’s Bees Baby Beekeeper Wearable Blanket


It’s hard to go wrong with a Burt’s Bees product, and the Burt’s Bees Baby Beekeeper Wearable Blanket is no exception. This best sleep sack for baby is made from 100% organic and lightweight cotton. So, it makes for a fabulous summer sleep sack for baby and can be used in winter, too, especially if you have central heating. This warm baby sleep sack is available in a gamut of colors and three sizes. What’s more, it fits well over your infant’s shoulders and even has an inverted zipper down the front. This keeps the blanket securely in place while also allowing parents for easy diaper changes during the night. All in all, this sleeping bag is machine washable, doesn’t irritate the skin, and is super soft.


  • Lightweight.
  • Eco-friendly.
  • Fits well.


  • Not recommended for absolutely cold nights if you don’t have central heating.

Copper Pearl Sleep Bag


The Copper Pearl Sleep Bag is a fabulous winter warm sleep sack for your baby. This warm winter baby sleep sack is made from a blend of rayon and polyester, and that too in a three-layer build. So, it makes for the perfect swaddle for a comfortable night’s rest for your infant. What’s more, the material has just enough stretch to allow your baby to sleep safely in any position. The best bit is that babies can begin using this sleep bag safely immediately after they’re born. So, it’s very convenient for new parents and caregivers who’ve been having trouble with swaddling. Thanks to the top-to-bottom zipper, middle-of-the-night diaper changes are made just a little quicker, easier, and bearable. Finally, we love the tag-free neckline, which means the baby won’t feel any scratches.


  • Top-to-bottom zipper.
  • Three layers.
  • Tag-free neck.


  • Some parents found the zipper slightly difficult to maneuver.

HALO Sleepsack 3-Way Adjustable Baby Swaddle


The HALO Sleepsack 3-Way Adjustable Baby Swaddle is the best sleep sack for baby parents on a budget. Even infants that weigh as less as 6 lbs and are just 19 inches long can safely use this sleeping bag. That’s because it’s designed to work as a swaddle and a transitional sleeping bag later. To use it, wrap it over your infant’s shoulders and secure the inverted zipper down the front in place. In order to swaddle your newborn babe, simply wrap the wings around their arms, securing them with the velcro tabs. What’s more, you can even leave your tot’s arms free and simply wrap the wings around their torso while still giving them the feeling of a tight, secure, and cozy swaddle. Finally, the 100% cotton muslin makes it a great summer sleep sack for baby and washer and dryer safe.


  • Affordable.
  • User-friendly
  • Easy to secure babies while keeping them comfy.


  • Not recommended for preemies.

Hudson Baby Long-Sleeve Sleeping Bag


The Hudson Baby Long-Sleeve Sleeping Bag is a great winter sleep sack for your baby. This sleeping bag is perfect for all those cold winter nights, thanks to the long sleeves that’ll keep your infant warm all night long. Moreover, it’s made from 100% cotton, making it breathable and cozy. At the same time, this wearable blanket is very soft and can be layered with a onesie beneath for additional warmth. Furthermore, this amazing sleeping sack is available in a variety of sizes, ranging from newborns and up to 24 months or 2 years. So, you can rest assured that you’ll find the right size to keep them comfortable. Finally, this sleeping bag is machine-washable for easy and hassle-free cleaning.


  • 100 percent cotton
  • Several sizing options
  • Different patterns/colors


  • Not meant for summers.

HALO Early Walker Sleepsack


Is your genius baby turning out to be a quick walker? Then the HALO Early Walker Sleepsack is the best sleep sack for baby. This sleeping bag is perfect for toddlers who’ve begun walking, thanks to its slightly different design. That’s because it has two feet holes so that your toddlers can move around safely before bedtime. Once they’re asleep, you can cover their toes with a blanket to keep their feet warm throughout the night. Moreover, it’s made from soft microfleece and comes in three sizes for babies weighing between 16 and 36 lbs. Finally, it’s budget-friendly as well.


  • Budget-friendly.
  • Great for walkers
  • Made from soft fleece.


  • Feet aren’t covered, especially for warmth.

HALO Sleepsack Micro-Fleece Wearable Blanket


The HALO Sleepsack Micro-Fleece Wearable Blanket is the perfect war winter sleep sack for baby. This sleeping bag is perfect for covering up your infants if your home gets cold in the winter months. That’s because this sleeping bag is made from soft and thick 100% microfleece, thus ensuring that your baby sleeps warm and cuddly all night long. It’s easy to use and drape them around the babies as well. All you need to do is wear the wearable blanket over the baby’s shoulders, which then stays put thanks to the inverted zipper. It also helps with late-night diaper changes, making them easy and hassle-free. Finally, this machine-washable sleep sack comes in many sizes and colors and keeps your tiny tot warm until they reach 28 lbs.


  • Inverted zipper.
  • Great for cold nights
  • Machine-washable.


  • Not recommended for preemies.

SwaddleMe Original Swaddle 3-Pack


The SwaddleMe Original Swaddle 3-Pack is the best sleep sack for baby. During early infancy, infants like to be swaddled tightly, which helps greatly soothe their Moro reflex or startle reflex. However, traditional swaddles could be difficult to use, which is why this one is designed as a combination of a swaddle and a warm baby sleep sack. Another huge benefit of this sleeping bag is that it offers babies a feeling of security since it encloses their feet, giving them a more womb-like environment. What’s more, parents just need to tuck their infant’s feet into the little pouch before wrapping the wings around their arms easily. Thus, you can secure them in a tight little swaddle. Finally, all you need to do for diaper checks and changes is pull their legs out and pull the pouch back up once done.


  • Easy to secure.
  • Warm and comfy.
  • Perfect for newborns.


  • Babies outgrow it quickly.

Simple Joys by Carter’s Unisex Babies’ Sleepbag


The Simple Joys by Carter’s Unisex Babies’ Sleepbag is yet another amazing warm sleep sack for your baby. Babies can begin using this sleeping bag immediately after birth, so caregivers and parents can skip the traditional swaddle. Even though the zipper isn’t reversible, a well-designed safety tab covers the zipper at the neckline. So, it effectively keeps your infant’s neck and chins safe from getting caught in the zipper. What’s more, this sleep sack is made from 100% polyester and feels soft against your tot’s skin. So, it works great for winters as well. Finally, thanks to the machine-washable material, clean-up is a hassle-free process.


  • Lightweight.
  • Stylish design.
  • Safety tab on the zipper.


  • No reversible zipper.

Baby Deedee Sleep Nest Lite Sleeping Bag Sack


The Baby Deedee Sleep Nest Lite Sleeping Bag Sack is the best sleep sack for baby. This sleeping bag is made from lightweight 100% cotton, making it perfect for those warm summer nights and helping your infant sleep comfortably. Not only does it give your tiny tot the comfort of a blanket, but it’s still breathable at the same time to avoid overheating. Furthermore, the snap shoulders and reverse zipper make it very easy for late-night diaper changes. Since it’s available in many color options and three different sizes ranging from newborn to three years old, this sleeping bag is very popular with parents. The best bit? It’s machine washable!


  • Shoulder straps.
  • Reversible zipper
  • Breathable and comfy.


  • Not for winters.

Woolino 4 Season Ultimate Baby Sleep Sack


There’s no sleeping bag for babies as versatile as the Woolino 4 Season Ultimate Baby Sleep Sack. This Woolino sleeping bag has an organic cotton outer layer and a merino wool inner layer, thus helping regulated your baby’s temperature in all seasons. What’s more, the two shoulder snaps and the bottom zipper make it easy to put this on and take it off your baby for easy diaper changes. If that wasn’t enough, this sleeping sack is durable and can be used for babies as young as two months old and up to when they’re two years old. Finally, it’s machine washable, so you don’t have to wash them all day long.


  • Safe from 2 months until 2 years of age.
  • The two-way zipper makes overnight diaper changes a breeze.
  • Shoulder snaps for easy removal.


  • Expensive.

SleepingBaby Poly Zipadee-Zip Swaddle


The SleepingBaby Poly Zipadee-Zip Swaddle is the overall best sleep sack for baby, especially those who’re transitioning from the swaddle to the sack. This sleeping bag is designed to help ease your infant through the transition from swaddle to sack, thanks to the unique starfish design. So, it allows your tot to safely wiggle around and roll over while still enclosing them in a secure and comfy swaddle. Moreover, it comes in a huge range of amazing fabrics and cute designs, making it perfect for across seasons. Some parents also recommend getting the Snuggle Strap from the same brand that mimics the feeling of a swaddle without constricting your infant’s arms. 

If you’re looking especially for swaddled, then there are the best swaddled for babies.


  • Grows with the baby.
  • Breathable and warm.
  • Unique starfish design.


  • None!

How To Choose The Best Sleep Sacks for Babies?


One of the most important factors when looking for sleep sacks for babies is ensuring that it’s the right size for your tot. For that, you need to look at both the weight and the age range to find the best fit. Also, parents need to ensure that the sleep sack’s zipper is high quality. That’s because if it comes undone during the night, it could pose a risk for SIDS. 


When it comes to designs, there are several different ones that you could choose from depending on your kid’s mobility, size, and age. One of the things you need to keep in mind is your kid’s abilities. For instance, a standard sleep sack covers the body while keeping the arms free. A traditional sleep sack, on the other hand, can go from swaddle to sack as infants grow. Finally, the most basic one is the swaddle sleep sack that keeps your infant’s arms wrapped tight. There are even early walker sleep sacks that let your infant’s feet poke out of the sack’s bottom for comfort. 


It’s no surprise that sleep sacks come in various materials, including polyester blends that are easy to care for, eco-friendly organic cotton and bamboo rayon, and breezy and light cotton muslin. There is even warm polyester microfleece for cold weather climates. Obviously, you don’t want microfleece for a summer sleep sack for baby, and a cotton one won’t work as a winter sleep sack for baby. So, you need to see the climate and then choose. Additionally, you might want to avoid sleep sacks that aren’t machine-friendly, especially if you don’t want to keep washing all day long.

Are sleep sacks good for babies?

Sleep sacks are acceptable and, in fact, the preferred alternative to swaddle blankets. That’s because they go a long way in lessening the risk of entrapment and suffocation in babies.

When should babies stop wearing sleep sacks?

Usually, this limit varies with different babies. While some might stop wearing them as early as 18 months, there are other infants who won’t let go of them until they turn toddlers. Notwithstanding the age, you should stop making babies wear them when the largest sleep sack no longer fits them.

Do babies arms get cold in sleep sacks?

The best sleep sack for baby is designed to be deliberately sleeveless so that infants don’t overheat. Infants often have cold hands at night because of poor circulation, and it’s no indication of their overall temperature.

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