Halo 100% Cotton Sleepsack

Last updated date: March 29, 2021

DWYM Score

8.9

Halo 100% Cotton Sleepsack

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We looked at the top Sleep Sacks and dug through the reviews from some of the most popular review sites. Through this analysis, we've determined the best Sleep Sack you should buy.

Update as September 13, 2021:
Checkout The Best Sleep Sack for a detailed review of all the top sleep sacks.

Overall Take

One of the most affordable and comfortable sleep sacks is this model. Made of soft cotton, this sleeper comes recommended by hospital nurseries as one of the safer sleep sacks. Parents will love the roominess around the sleeper's hip area and the zipper closure for easy diaper changes.


In our analysis of 59 expert reviews, the Halo 100% Cotton Sleepsack placed 9th when we looked at the top 13 products in the category. For the full ranking, see below.

From The Manufacturer

The Halo SleepSack wearable blanket replaces loose blankets in the crib that can cover your baby's face and interfere with breathing. In addition to sleeping safer, it helps babies sleep better, too. It's a warm cuddly blanket they can't kick off; ensuring baby sleeps soundly throughout the night. Inverted zipper for easy diaper changes. Unique, roomy sack design does not restrict baby’s legs to ensure proper hip development. It is recognized by the International Hip Dysplasia Institute as 'Hip Healthy'. Sleeveless to help reduce the risk of overheating. Arm and neck openings sized for a safer fit. Dress your baby in a bodysuit, coverall or pajamas underneath the wearable blanket. Back is Best' embroidery reminds all caregivers to put your baby on her back to sleep. Our founder, Bill Schmid and his wife lost their first born to SIDS. From this tragedy, HALO and its mission were born. Today, HALO SleepSack Wearable Blankets are the #1 trusted choice* of hospitals and are used to help babies sleep safely from the start. Help us in our mission to fight SIDS and keep all babies sleeping safely - a portion of your purchase will be used in partnership with non-profits and hospitals dedicated to educating families on safe sleep practices.

Expert Reviews

Expert Summarized Score

8.3
10 expert reviews

User Summarized Score

9.9
3,203 user reviews

What experts liked

By design, it is big to provide plenty of wiggle space. Cotton is usually stretchy, and so you are better off with a bigger one that will contain the baby even when they kick.
- Toodrie
May 29, 2019 | Full review
Changing a diaper is simple because the zipper is inverted and the SleepSack does not need to be removed. This is a great feature, as there have been a few occasions where I’ve had to change a diaper in the middle of the night. I’m all about a quick diaper change that doesn’t disturb my baby too much!
- Our Lucas Life
It is also zippered to eases diaper change and has unique embroidery (back is best) for safety. Whenever you are laying your baby to sleep, it reminds you to lay your baby on his or her back to prevent suffocation.
- iExpert 99
Offers two sleep sack styles for more options. Having two sleep styles readily available gives parents options as they figure out what their baby likes. Swaddle-style sleep sack has three wrapping options – arms in, hands to face, one or both arms out. Users like having extra options, especially parents of unpredictable newborns.
- Review Lab
Truly, this wearable blanket is the perfect alternative to swaddles and is great because they keep the babies snug but still free to move around their hands (no sleeves to prevent overheating) and feet.
- Parents Need To Know
Not only do the majority of users acknowledge the high quality of the materials (the cotton is really soft and nice), but they also positively respond in favor of this wearable blanket due to its “upside down” zipper which means many parents will sleep more soundly knowing their little ones are not at risk of SIDS.
- Blanket For Baby
Furthermore, this blanket has a roomy and unique sack design that will not restrict your baby’s legs, thereby, ensuring that the hips of your young one develop properly.
- Ah Joo
The neck on this sleepsack is curiously way too big in proportion to the rest of the sleepsack. This makes it easy for it to bunch up over baby’s face when they’re sleeping and could present a safety hazard.
- Happy Happy Vegan
May 14, 2019 | Full review
Made from 100% lightweight cotton, the HALO SleepSack comes in four different sizes that can fit babies up to 24 months old.
- Sleepy Bliss
May 28, 2019 | Full review
Our favorite part is how the zip opens from the bottom for easy diapering, plus there are no sleeves to counter the chances of overheating.
- Mom Baby Best

What experts didn't like

The plastic zipper gets caught n the fabric several times.
- Toodrie
May 29, 2019 | Full review
Shifts while baby sleeps. Both sacks tend to creep up the baby’s face during sleep.
- Review Lab
The arm opening is a little too small
- Ah Joo
Could ride up over baby’s mouth while sleeping
- Happy Happy Vegan
May 14, 2019 | Full review
One thing to note is that the armholes aren't adjustable, which is a common complaint among most sleep sacks. While this may cause your baby's arms to slip out on occasion, it's generally not a big concern.
- Sleepy Bliss
May 28, 2019 | Full review
The plastic zipper may be flimsy
- Mom Baby Best

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.

An Overview On Sleep Sacks

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.

The Sleep Sack Buying Guide

  • 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.