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The Best Baby Sleep Sack - 2021

Last updated on March 2, 2021

We looked at the top 7 Baby Sleep Sacks and dug through the reviews from 31 of the most popular review sites including and more. The result is a ranking of the best Baby Sleep Sacks.

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Our Picks For The Top Baby Sleep Sacks

Show Contents
Our Take
Experts Included
Pros
Cons
  Our Top Pick

Burt’s Bees Organic Cotton Sleep Sack Bag

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Burt's Bees

Organic Cotton Sleep Sack Bag

Overall Take

She Will Bee BuzzingCute and practical, this sleep sack is a solid all-around choice.

Experts Included
DWYM Baby and Kids Experts plus The Bump, Good Housekeeping, Verywell Family, A Sleepy Wolf, What To Expect, Baby Gear Lab and 2 more. Along with user reviews from Amazon.
Pros
" Features a zipper that opens from the bottom (to make diaper changes quick and easy), plus an interior zipper guard and a snappable zipper cover. The organic cotton is an ideal choice for little ones with sensitive skin."
Cons
"Zipper’s hard to pull up and lock. The durability is questionable."
  Best Long-Sleeve Set

Hudson Baby Unisex Cotton Long-Sleeve Sleep Sack

Hudson Baby

Unisex Cotton Long-Sleeve Sleep Sack

Overall Take

Double the Cozy SoftnessThis set of sleep sacks is adorable and perfect for baby boys or girls.

Experts Included
DWYM Baby and Kids Experts plus Experienced Mommy, Nursing Moms. Along with user reviews from Amazon, Target and Walmart.
Pros
" Long-sleeved design. Features built-in scratch mittens. Good price. Features zipper protector. Lots of designs to choose from."
Cons
"The neck hole is quite large for some baby."
  We Also Like

Nested Bean Cotton Weighted Zen Sleep Sack

Nested Bean

Cotton Weighted Zen Sleep Sack

Overall Take

Hi-Tech; Deep SleepThis weighted wearable blanket will help infants rest through the night.

Experts Included
DWYM Baby and Kids Experts plus MamatheFox, Wear Love Wanders, Breast Feeding Needs, Lucie’s List, Good Housekeeping, Mom Loves Best and 2 more. Along with user reviews from Amazon and Target.
Pros
" Zen products are toxin free. It is super easy to zip and just glides right along. The sack has a double zipper giving you the option to zip and unzip from the top/side or the bottom. The material is also..."
Cons
"Many report longer sleep periods with the weighted sack, but as with anything, some don’t notice any difference in their child’s sleep."
  Strong Contender

HALO Cotton Wearable Blanket Sleepsack

HALO

Cotton Wearable Blanket Sleepsack

Overall Take

No More Loose BlanketsFor easy diaper changes and more restful nights, select this wearable blanket.

Experts Included
DWYM Baby and Kids Experts plus The Bump, Mom Loves Best, What To Expect, Verywell Family, Thrifty Littles and 1 more. Along with user reviews from Amazon, Walmart and Target.
Pros
" It unzips from the bottom for quick and easy middle-of-the-night diaper changes, and the roomy sack design provides plenty of space for rambunctious baby kicks."
Cons
"Some mothers found the neck hole was too large. Some mothers feel that the zipper is low-quality."
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.
14

Products Considered

We identified the majority of the baby sleep sacks available to purchase.
7

Products Analyzed

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

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31

Expert Reviews Included

In addition to our expert reviews, we also incorporate feedback and analysis of some of the most respected sources including: Maman Loup's Den, The Baby Swag, This West Coast Mommy, Full Time Mama, Experienced Mommy.

68,521

User Opinions Analyzed

We also incorporate user reviews from the leading retailers including

Our experts reviewed the top 7 Baby Sleep Sacks and also dug through the reviews from 31 of the most popular review sites including and more. The result is a ranking of the best of the best Baby 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.

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The Best Overall

Burt’s Bees Organic Cotton Sleep Sack Bag


Our Expert Score

10.0
8 expert reviews

User Summarized Score

9.6
11,909 user reviews

Our Take

How cute is this wearable blanket? This sleep sack is designed like a vest, and it fits over your baby’s clothing or jammies to cocoon them in soft comfort. It is made from 100% organic cotton, and it has a bottom-opening zipper for easy diaper changes.

What other experts liked

Features a zipper that opens from the bottom (to make diaper changes quick and easy), plus an interior zipper guard and a snappable zipper cover. The organic cotton is an ideal choice for little ones with sensitive skin.
- The Bump
Made with GOTS certified organic cotton so you know the entire manufacturing process (not just the growing of the cotton) follows strict standards.
- Good Housekeeping
The fabric is soft and lightweight, yet still warm, and there’s plenty of room in the lower half for your little one to kick and move their legs around freely.
- Baby List
This wearable blanket uses 100 percent organic cotton that is smooth and soft to the touch. The blanket provides ample room for your baby to move around which will help with hip development.
- Verywell Family
Made of organic and hypoallergenic fabrics. Breathable and prevents overheating. A lot of leg room for more movement.
- A Sleepy Wolf
100 percent organic cotton, super soft and breathable, making it ideal for warmer weather. It also comes with plenty of leg room, as well as a bottom zipper to make diaper changes a breeze.
- What To Expect
Soft fabric. Extra length for long babies. Snap cover at the bottom of the zipper.
- Baby Gear Lab
Designed to allow healthy hip movement for baby. It comes in cute unisex prints. The sizes are roomy to allow for baby’s growth.
- Mom Loves Best

What other experts didn't like

Zipper’s hard to pull up and lock. The durability is questionable.
- A Sleepy Wolf
No double zipper.
- What To Expect
Very thin/lightweight. Mixed quality reviews.
- Baby Gear Lab
Some moms felt the sizing was too large.
- Mom Loves Best

The Best Bang For Your Buck

Hudson Baby Unisex Cotton Long-Sleeve Sleep Sack

Our Expert Score

10.0
2 expert reviews

User Summarized Score

9.0
4,211 user reviews

Our Take

Like a little sleeping bag with arms, this wearable bag comes in sets of two, in sizes three to nine months. The 100% cotton material is gentle on sensitive skin, and it is machine washable. Choose from a variety of charming patterns, like clouds, lemons or flowers.

What other experts liked

Long-sleeved design. Features built-in scratch mittens. Good price. Features zipper protector. Lots of designs to choose from.
- Experienced Mommy
Made of super-soft cotton. Stretchable. Long sleeves design. Lots of prints to choose from. Snap tab closure. Zipper closure. Zipper protector. Built-in scratch mittens. Breathable fabric.
- Nursing Moms

What other experts didn't like

Sizes only accommodate up to 9 months.
- Experienced Mommy
The neck hole is quite large for some baby.
- Nursing Moms

Overall Product Rankings

Burt’s Bees Organic Cotton Sleep Sack Bag

1. Burt’s Bees Organic Cotton Sleep Sack Bag

Overall Score: 9.9
Reviews Included: 11

Hudson Baby Unisex Cotton Long-Sleeve Sleep Sack

2. Hudson Baby Unisex Cotton Long-Sleeve Sleep Sack

Overall Score: 9.7
Reviews Included: 5

Nested Bean Cotton Weighted Zen Sleep Sack

3. Nested Bean Cotton Weighted Zen Sleep Sack

Overall Score: 9.4
Reviews Included: 11

HALO Cotton Wearable Blanket Sleepsack

4. HALO Cotton Wearable Blanket Sleepsack

Overall Score: 9.3
Reviews Included: 10

Hudson Baby Unisex Cotton Sleeveless Sleep Sack

5. Hudson Baby Unisex Cotton Sleeveless Sleep Sack

Overall Score: 9.2
Reviews Included: 4

HALO Big Kids Lightweight Knit Sleepsack

6. HALO Big Kids Lightweight Knit Sleepsack

Overall Score: 9.1
Reviews Included: 9

TILLYOU Cotton 2-Way Zipper Sleep Sack

7. TILLYOU Cotton 2-Way Zipper Sleep Sack

Overall Score: 9.0
Reviews Included: 2

Our Baby Sleep Sack Findings


Burt’s Bees Organic Cotton Sleep Sack Bag

What We Liked: How cute is this wearable blanket? This sleep sack is designed like a vest, and it fits over your baby’s clothing or jammies to cocoon them in soft comfort. It is made from 100% organic cotton, and it has a bottom-opening zipper for easy diaper changes.

Simplemost Media


Hudson Baby Unisex Cotton Long-Sleeve Sleep Sack

What We Liked: Like a little sleeping bag with arms, this wearable bag comes in sets of two, in sizes three to nine months. The 100% cotton material is gentle on sensitive skin, and it is machine washable. Choose from a variety of charming patterns, like clouds, lemons or flowers.

Simplemost Media


Nested Bean Cotton Weighted Zen Sleep Sack

What We Liked: This is an upgrade from other sleep sacks, because it is made with gentle weights that cradle babies in comfort. This ingenious sleep sack even has adjustable shoulder snaps that can be sized as they grow. It also has a two-way zipper, and it is machine washable.

Simplemost Media


HALO Cotton Wearable Blanket Sleepsack

What We Liked: Known as the original sleep sack, this one is used in hospitals and helps babies sleep better. It has neck and arm openings to let it fit right over baby’s pajamas or clothes, and it is crafted from 100% cotton interlock fabric. This sack also has an inverted zipper that opens up from the bottom.


Hudson Baby Unisex Cotton Sleeveless Sleep Sack

What We Liked: Your little superstar will feel warm and snuggly in this sleeveless 100% cotton baby sleep sack. It comes in sizes 0 to 24 months and features a beautiful celestial pattern.

Simplemost Media

Our Baby Sleep Sack Buying Guide

While swaddling blankets wrap around babies to keep them feeling snug and secure, they usually loosen. Worse still, if they are wrapped too tightly, it limits the baby’s mobility. Sleep sacks (also called sleep bags) are made of thicker material, and they provide that snuggly feeling without limiting mobility. They are basically like wearable blankets, with zippers for when diaper changes are needed.

Simplemost Media

Experts feel that sleeping sacks can help babies snooze longer, and that makes parents, caregivers, babies and their siblings happier. Some of these outfits have sleeves, while others are sleeveless and fit right over whatever the baby is already wearing. When the weather is cool, a full-sleeved option will keep them warmer.

Simplemost Media

Look for soft, natural materials like 100% cotton when shopping for baby sleep sacks. Also read about where the zipper is located; some zipper from the bottom up. You don’t want to be scrambling around when baby needs a clean diaper.

DWYM Fun Fact

Some flustered new parents will do almost anything to get their babies to sleep. Some parents do squats to get their little ones to fall asleep. Babies tend to like the up-and-down movement, so doing some gentle exercises while you are holding them could create a little bit of sleepytime magic.

The Baby Sleep Sack Tips and Advice

  • Choose a sleep sack that is appropriate for your baby’s weight and size.
  • The sack should fit comfortably around the baby’s neck, shoulders and torso, and it should not be tight.
  • The sleep sack’s neck opening should not be too big; you wouldn’t want your baby to slip down inside.
  • The arm holes on a sleep sack should not be big enough to allow the baby to get their hands inside the body of the outfit.