Don't Waste Your Money is supported by our readers. When you purchase an item through links on our site, we may earn an affiliate commission.

The Best Sleep Sack - 2021

Last updated on March 29, 2021

We looked at the top 12 Sleep Sacks and dug through the reviews from 56 of the most popular review sites including and more. The result is a ranking of the best Sleep Sacks.

Best Sleep Sack

Why Trust The DWYM Score?

DWYM is focused on helping you make the best purchasing decision. Our team of experts spends hundreds of hours analyzing, testing, and researching products so you don't have to.Learn more.

Look for the DWYM seal for products that are the best in a category.

Our Picks For The Top Sleep Sacks

Show Contents
Our Take
Experts Included
Pros
Cons
  Best Overall

TILLYOU Cotton 2-Way Zipper Sleep Sack

Don't Waste Your Money Seal of Approval

TILLYOU

Cotton 2-Way Zipper Sleep Sack

Overall Take

Sleeveless DesignThis sleep sack is constructed from a 100% breathable cotton that will keep your baby cool and comfortable.

Experts Included
DWYM Baby and Kids Experts plus Experienced Mommy. Along with user reviews from Amazon.
Pros
" Features a convenient and practical 2-way zipper design. Sleeveless so baby doesn’t get too hot and can move around freely. 100% Natural Premium Cotton. Features zipper protectors."
  Best Basic

Amazon Essentials Microfleece Sleep Sack, 2-Pack

Amazon Essentials

Microfleece Sleep Sack, 2-Pack

Overall Take

Economical PickThanks to the budget-friendly price tag on this sleep sack set, you'll be able to pick up a few different colors and patterns.

Experts Included
DWYM Baby and Kids Experts plus . Along with user reviews from Amazon.
  Eco-Friendly Option

Burt’s Bees Baby Beekeeper Wearable Blanket

Burt's Bees Baby

Beekeeper Wearable Blanket

Overall Take

Maximum ComfortOnly organic cotton is used to construct this sleep sack.

Experts Included
DWYM Baby and Kids Experts plus Mom Loves Best, Ah Joo, Baby Gear Lab, The Friendly Fig and 1 more. Along with user reviews from Amazon and Target.
Pros
" We like the fact that they’ve been worn and tested with care, and the security that comes with buying from a unique, established brand like Burt’s."
Cons
"A little large, especially for newborns"
  Cold-Weather Pick

Hudson Baby Unisex Long Sleeve Wearable Sleep Sack

Hudson Baby

Unisex Long Sleeve Wearable Sleep Sack

Overall Take

Long SleevesYou can purchase this sleep sack in sizes 0 to 9 months.

Experts Included
DWYM Baby and Kids Experts plus . Along with user reviews from Amazon.
Don't just take for granted what one reviewer says. Along with our own experts, DWYM analyzes the top expert reviews of the leading products and generates a score you can actually trust.
19

Products Considered

We identified the majority of the sleep sacks available to purchase.
12

Products Analyzed

We then selected the leading and most popular products for our team to review.

View All Product Rankings

56

Expert Reviews Included

In addition to our expert reviews, we also incorporate feedback and analysis of some of the most respected sources including: Experienced Mommy, Happy Happy Vegan, Alterestimate, Allace Reviews, Mom Loves Best.

39,613

User Opinions Analyzed

We also incorporate user reviews from the leading retailers including

Our experts reviewed the top 12 Sleep Sacks and also dug through the reviews from 56 of the most popular review sites including and more. The result is a ranking of the best of the best Sleep Sacks.

DWYM is your trusted roduct review source. Our team reviews thousands of product reviews from the trusted top experts and combines them into one easy-to-understand score. Learn more.

Don't Waste Your Money Seal of Approval
Look for the DWYM seal for products that are the best in their category.

The Best Overall

TILLYOU Cotton 2-Way Zipper Sleep Sack


Our Expert Score

0.0
1 expert reviews

User Summarized Score

9.0
7,789 user reviews

Our Take

If you're looking for a sleep sack that works well with active babies, this set is your best bet. It's designed for toddlers age 12 to 18 months and comes without sleeves, so little ones are free to use their hands. The sacks also come in fun prints, like clouds, crowns, planes and sunflowers.

What other experts liked

Features a convenient and practical 2-way zipper design. Sleeveless so baby doesn’t get too hot and can move around freely. 100% Natural Premium Cotton. Features zipper protectors.
- Experienced Mommy

What other experts didn't like

Only 4 designs to choose from.
- Experienced Mommy

The Best Bang For Your Buck

Amazon Essentials Microfleece Sleep Sack, 2-Pack

User Summarized Score

9.4
1,475 user reviews

Our Take

You'll find this sleep sack set is a great choice during the cold winter months. It's made from a warm and cozy microfleece that's also high-quality and extremely durable. The sacks are even machine washable for ease of care.

Overall Product Rankings

TILLYOU Cotton 2-Way Zipper Sleep Sack

1. TILLYOU Cotton 2-Way Zipper Sleep Sack

Overall Score: 9.5
Reviews Included: 2

Amazon Essentials Microfleece Sleep Sack, 2-Pack

2. Amazon Essentials Microfleece Sleep Sack, 2-Pack

Overall Score: 9.4
Reviews Included: 1

Burt’s Bees Baby Beekeeper Wearable Blanket

3. Burt’s Bees Baby Beekeeper Wearable Blanket

Overall Score: 9.3
Reviews Included: 7

Hudson Baby Unisex Long Sleeve Wearable Sleep Sack

4. Hudson Baby Unisex Long Sleeve Wearable Sleep Sack

Overall Score: 9.2
Reviews Included: 1

Love To Dream Swaddle UP

5. Love To Dream Swaddle UP

Overall Score: 9.1
Reviews Included: 10

Nested Bean Zen Sack Classic Sleep Sack

6. Nested Bean Zen Sack Classic Sleep Sack

Overall Score: 9.0
Reviews Included: 6

baby deedee Sleep Nest Lite

7. baby deedee Sleep Nest Lite

Overall Score: 9.0
Reviews Included: 10

Halo 100% Cotton Sleepsack

8. Halo 100% Cotton Sleepsack

Overall Score: 8.9
Reviews Included: 14

Halo Early Walker Micro Fleece Sleepsack

9. Halo Early Walker Micro Fleece Sleepsack

Overall Score: 8.6
Reviews Included: 11

Touched by Nature Unisex Organic Cotton Sleeping Bag

10. Touched by Nature Unisex Organic Cotton Sleeping Bag

Overall Score: 8.0
Reviews Included: 5

Hudson Baby Soft Jersey Cotton Sleeping Bag

11. Hudson Baby Soft Jersey Cotton Sleeping Bag

Overall Score: 8.0
Reviews Included: 3

aden + anais Classic Sleeping Bag

12. aden + anais Classic Sleeping Bag

Overall Score: 7.6
Reviews Included: 12

Our Sleep Sack Findings


TILLYOU Cotton 2-Way Zipper Sleep Sack

What We Liked: If you’re looking for a sleep sack that works well with active babies, this set is your best bet. It’s designed for toddlers age 12 to 18 months and comes without sleeves, so little ones are free to use their hands. The sacks also come in fun prints, like clouds, crowns, planes and sunflowers.


Amazon Essentials Microfleece Sleep Sack, 2-Pack

What We Liked: You’ll find this sleep sack set is a great choice during the cold winter months. It’s made from a warm and cozy microfleece that’s also high-quality and extremely durable. The sacks are even machine washable for ease of care.


Burt’s Bees Baby Beekeeper Wearable Blanket

What We Liked: Available in small, medium and large, this sleep sack does an excellent job of gradually transitioning your baby out of swaddling. The sack is roomy and allows for the baby to freely move his or her arms. For convenience, the zipper starts at the bottom, which allows for easy diaper changes.


Hudson Baby Unisex Long Sleeve Wearable Sleep Sack

What We Liked: While many sleep sacks are sleeveless, this set includes long sleeves. That makes it a better choice for the cold winter months. The sleep sacks are soft and gentle and available in 17 different colors and patterns for both boys and girls.


Love To Dream Swaddle UP

What We Liked: If you’re looking for a trustworthy award-winning sleep sack, this model is for you. This sleeping aid gives your baby the opportunity to self-soothe, as it is less restrictive than most sleep sacks. It’s unique wing design also prevents your baby from being able to scratch his or her face during nap time.

Our Expert Consultant

Kate Desmond 
Parenting Pro and Safe-Sleep Expert

Kate Desmond is a writer and infant safe-sleep expert. She has spent the last eight years working as the marketing director for Charlie’s Kids Foundation, a nonprofit that aims to educate families about SIDS and safe sleep. In that role, she travels around the country learning and educating caregivers and providers on the latest and greatest safe-sleep information to prevent infant death.

As mom to two elementary-aged daughters, she spends hours researching the best and safest products for her own kids. She is quick to get in the weeds with other mamas, and uses humor to cope with parenting woes from potty-training to teaching kids to read. She writes about the ups and downs of parenting on her blog.

Our Sleep Sack Buying Guide

Among the many useful items you’ll purchase or be gifted at your baby shower are sleep sacks. Sleep sacks were designed with your infant’s safety in mind to help him or her drift off into a peaceful nap or nighttime slumber.

Safe-sleep expert, Kate Desmond, says sleep sacks are one parenting purchase you will not regret.

“Sleep sacks are the perfect and safe solution for parents looking to provide a little extra comfort or warmth for their sleeping baby,” she says. “We know that loose bedding is a major risk factor when it comes to infant sleep-related deaths. A sleep sack gives parents the ability to provide a cozy environment and warmth without the risk of a traditional blanket. “

You’ll find several different types of sleep sacks on the market, so it’s a good idea to do a little research before selecting one that would work the best for your newborn.

Start off looking for any awards or recommendations that let you know you’re buying a quality sleeper. For example, some brands are listed as the No. 1 trusted choice of hospitals that is used in hospital nurseries all over America. You also want them to be recognized as “Hip Healthy” by the International Hip Dysplasia Institute. Many that have a roomy sack that doesn’t restrict a baby’s legs from moving around have this designation.

“Sleep sacks come in a variety of types with some offering swaddle arms or flaps and others more tank top-like armholes,” Desmond says. “The important thing to note when purchasing a sleep sack is your baby’s size and ability to roll. Once a baby is able to roll you definitely want to opt out of the swaddle variety and switch to the more traditional sleeveless sack.”

Be sure to check out the sleep sack design. Is it restrictive and frustrating, or is it snug in a way that promotes calm? Look for a sleep sack that was created with a patented design that allows your baby to self-soothe. When you place your baby in the sleeper, you’ll tuck his or her arms in the sack in an upward position, which is how newborns tend to place their arms when sleeping on their backs.

Determine if important safety standards were followed and whether the sleep sack has been tested to meet those standards. You won’t want the sleeper to have any toxins. It should be BPA and phthalate-free.

Can the sleep sack grow as your baby grows, or is it meant for just one stage of use? Some sleepers are only for swaddling, while others have removable shoulder snaps to allow for growth. Examine the zipper on the sleep sacks. Although any zipper will do, a reverse zipper is best because it allows for changing your newborn’s diaper without fully removing them from the sleeper. If you’re lucky, your baby will even sleep through the diaper change!

“Sleep sacks get bonus points with me if they have a double or reverse zipper,” Desmond says. “Changing a diaper from the bottom up, instead of top-down is a huge bonus in the middle of the night.”

Desmond advises that you read the washing instructions before tossing your baby’s sleep sack in the wash.

“I found that, when possible, air-drying or a low dryer setting can prevent shrinkage,” she says. “With a fairly hefty price tag, it would be a big bummer if baby outgrew the sack due to laundry error rather than a growth spurt.”

Desmond also advises that you pay close attention to fabrics and weights.

“Make sure when selecting one for your baby you consider the temperature inside your home,” she says. “During certain months, a lightweight muslin sleep sack and a onesie might be perfect. Other times of the year might require something a little more substantial, like a heavier fleece fabric.”

Fashion-conscious parents will be happy to know sleep sacks come in all different colors and designs these days, so you will be sure to find one that matches your taste.

DWYM Fun Fact

Did you know that on average moms and dads lose out on approximately six months of sleep by the time their precious little one reaches two years of age? It’s true. Now we know how sleep affects parents, let’s take a look at what it does to newborns!

Although your infant may close his or her eyes a few minutes after you start using the rocking chair, deep sleep won’t occur until 20 minutes later. Baby sleep cycles are 30 to 40 minutes shorter than adults, which is why they wake up more frequently during the night.

It has been shown that parents who have babies who are better sleepers score higher cognitively than babies who don’t sleep as well. They also tend to have a better temperament. Newborns need a lot of sleep because their brains use 60% of their body’s glucose supply.

The average nap for an infant lasts between 1 1/2 to 2 1/2 hours. Babies tend to nap three to four times a day up until age 5 months, then drop to two to three naps through age 9 months. One to two naps are seen up until 18 months of age, however, parents may wish to put their children down for an afternoon nap through the toddler years (2 1/2 to 4 years of age).

The Sleep Sack Tips and Advice

  • Sleep sacks don’t need to be washed daily if they aren’t soiled from spit-up or a diaper leak. Instead, you can toss them in the wash once or twice a week when laundering your crib sheets.
  • Always check the sleep sack’s tag for washing and drying instructions. Most can be tossed in the washing machine just fine, but require drying on low heat. Of course, you’ll also want to make sure you’re using a laundry detergent that is gentle on a baby’s skin. Find one that is free of dyes and perfumes, or use one that is specifically labeled for use on newborn clothing.
  • It’s important to do all you can to prevent SIDS (Sudden Infant Death Syndrome). The American Academy of Pediatrics has several recommendations that parents will want to follow to reduce the risk of SIDS. This includes placing baby on his or her back for the first year of life during nap and bedtimes, as well as using a firm sleep surface and stopping the use of swaddlers once the baby begins to roll over.
  • Make sure you are choosing a sleep sack that is appropriate for the current climate. They do make sleep sacks that are thicker for colder winter months and sleepers that are made of lighter fabric for warmer summer months.
  • Select a sleep sack based on your baby’s weight, not age. You don’t want the sleep sack to be too tight, which would not only be uncomfortable for your little one, but could also pose a danger. Additionally, you don’t want the sleep sack to be so loose that it doesn’t provide the calming benefit that helps your little one fall fast asleep.
  • Look on the sleep sack packaging label to see what stage the sleeper is recommended for, so that you purchase one that matches the stage your baby is in. Stage 1 may be for swaddling, Stage 2 may be for transitioning out of swaddling and Stage 3 may be for independent sleeping.
  • You’ll be pleased to discover that when it comes to price, there isn’t much deviation among the various sleep sacks. The Amazon Essentials Microfleece Sleep Sack, 2-Pack, which has the best overall ratings, is one of the most affordable brands. You’ll also find the TILLYOU Cotton 2-Way Zipper Sleep Sack meet expectations when it comes to quality and price.

About The Author

Alicia Bodine
Alicia Bodine 

Alicia Bodine is a New Jersey-based writer and mother of two. As an aunt to countless nieces and nephews, Alicia spends her free time researching the latest toys and educational products to purchase the best gifts for her favorite little ones. With more than 15 years of experience, her work has appeared on leading baby and parenting publications.