Simplemost 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

Last updated on October 14, 2020

We looked at the top 10 Sleep Sacks and dug through the reviews from 55 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 Simplemost Score?

Simplemost 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 Simplemost seal for products that are the best in a category.

Our Picks For The Top Sleep Sacks

Show Contents
Our Take
  Our Favorite Overall Pick

Love To Dream Swaddle UP

Love To Dream

Swaddle UP

Overall Take

Effective and SoothingThis top-notch sleep sack promotes a restful sleep while protecting baby from accidental scratches.

  For Babies of All Sizes

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.

  Best Basic

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.

  Best for Transitions

Nested Bean Zen Sack Classic

Nested Bean

Zen Sack Classic

Overall Take

Features Calming WeightsThis sleep sack starts out fully swaddling your infant, and then changes to allow older babies to move their arms freely.

  Best for Warmer Temperatures

baby deedee Sleep Nest Lite

baby deedee

Sleep Nest Lite

Overall Take

Restful Night's SleepLight fabric means you can use this sleep sack during the warmer spring and summer months.

Don't just take for granted what one reviewer says. Along with our own experts, Simplemost analyzes the top expert reviews of the leading products and generates a score you can actually trust.
17

Products Considered

We identified the majority of the sleep sacks available to purchase.
10

Products Analyzed

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

View All Product Rankings

55

Expert Reviews Included

In addition to our expert reviews, we also incorporate feedback and analysis of some of the most respected sources.

30,349

User Opinions Analyzed

We also incorporate user reviews from the leading retailers including

The Best Overall

Love To Dream Swaddle UP

Our Expert Score

9.5

Our Take

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.


The Best Bang For Your Buck

Hudson Baby Unisex Long Sleeve Wearable Sleep Sack

Our Total Score

9.5

Our Take

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.

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? The Love To Dream Swaddle UP 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.

Simplemost 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 Love To Dream Swaddle UP, which has the best overall ratings, is one of the most affordable brands. You’ll also find the Nested Bean Zen Sack Classic 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.