The 4 Best Newborn Sleep Sacks You Need To Try

How we dress our newborns for sleeping is essential to our peace of mind and their safety and comfort during those first precious months of life.

Over the years sleep sacks, essentially wearable blankets, have emerged as a popular choice among parents and caregivers seeking to keep infants warm and secure through the night. 

Unlike traditional blankets, which can be unwieldy and pose a risk of covering a baby’s face, newborn sleep sacks are designed to stay in place, providing a cozy but safe sleeping environment.

With such a vast range of options, featuring different materials, sizes, and designs it can be rather overwhelming for you to know which is the best product for your baby’s needs.

With over 40 years of childcare experience as a Norland Nanny, in today’s article, I will share with you the best newborn sleep sack choices for your little one to keep them warm, cozy, and most importantly, safe.

Newborn Sleep Sack Featured

The Best Newborn Sleep Sacks

Newborn sleep sacks are a wonderful alternative to traditional blankets, blankets which over the years have been proven to pose a suffocation risk as baby wriggles, as they keep your baby’s arms and legs cozily wrapped up mimicking the comfort of the womb.

Today’s selection of newborn sleep sacks features only the best options on the market and I have considered factors like material quality, ease of use, size, and safety features:

All in all these factors can make a huge difference in your newborn’s sleep quality. So trust my choices to guide you toward the perfect sleep sack for your little one!

1. Burt’s Bees Baby Wearable Blanket

I have always been a fan of Burts Bees products and this sleep sack is no exception. With its range of tog weights and made from organic cotton you will be able to find a sleep sack that is perfect for your little one no matter what time of year they are born.

Burt's Bees Baby Baby Beekeeper Wearable Blanket, 100% Organic Cotton

This sleep sack is a favorite of mine for many reasons. I love the variety of fabrics and tog weights which ensure that you can always find the right one to suit your baby’s specific needs no matter what the time of year.

Ease of use is a significant advantage of Burt's Bees' Sleep Sacks. Diaper changes, often a hassle in the early hours, become more manageable, thanks to the thoughtfully designed bottom-size opening!

The fabric's quality also ensures that the sleep sack withstands the wear and tear of regular use and there is a wide range of colors to choose from all made from wonderfully soft 100% organic cotton. Being machine washable adds to its practicality and appeal to modern families! 

  • Promotes a snug and secure feeling
  • Great design with an interior zipper guard
  • Simplifies diaper changes with bottom opening zipper
  • Machine washable on a cold wash and gentle tumble dry
  • Large variety of sizes and tog weights
  • 100% cotton - perfect for soft sensitive skin
  • Some people have reported zipper issues after a while
  • Sizing can come up quite long so may not fit all newborns perfectly
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2. HALO Micro-Fleece Sleepsack Swaddle

Finding the perfect sleep environment for a newborn can be challenging, but the HALO Micro-Fleece Sleepsack Swaddle is designed to ease that transition. 

And for parents living in cooler environments looking for a warm, adjustable sleep solution for their newborn, the Halo micro-fleece swaddle is one that I would highly recommend.

HALO Micro-Fleece Sleepsack Swaddle, 3-Way Adjustable Wearable Blanket

With soft, plush micro-fleece, this HALO Sleepsack wraps 0 to 3-month-olds in just the right amount of warmth, offering both comfort and safe sleep practices with its arm immobilization feature.

The innovative 3-way swaddling system adapts to a baby's sleep style, a crucial feature for those restless nights. Whether it's arms in, hands-to-face, or arms out, it grows with the baby's swaddling needs. 

Meanwhile, the bottom zipper makes midnight diaper changes a breeze.

Safety is paramount when it comes to infant sleep products, and hospitals acclaim this swaddle as a safer alternative to loose crib blankets. 

  • Customizable swaddling options to help your baby transition from swaddle to sleeping sack
  • Bottom zipper for convenient diaper changes
  • Recognized as "Hip Healthy" by the International Hip Dysplasia Institute
  • Can be too warm for hotter climates
  • The velcro fastener can wear over time
  • Only suitable until baby begins rolling
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3. Love to Dream Swaddle UP Baby Sleepsack

If you’re looking for a sleep sack that supports baby’s natural sleeping positions, the Love to Dream Swaddle Up is a great choice. With its unique arms-up design, many parents find that their newborns sleep better and for longer in this cozy sleep sack.

The combination of comfort, ease of use, and focus on safety makes this product a popular pick among many new parents and is definitely worthy of being on my best newborn sleep sack list!

Love to Dream Swaddle UP, Baby Sleep Sack

The Love to Dream Swaddle UP's patented design allows infants to sleep with their arms up, which is a natural sleep position promoting self-soothing. Babies can gently touch their face and suck on their hands, a behavior that is often observed even before birth.

It has a snug but stretchy fit (helped by the materials 93% cotton and 7% elastane blend) that mimics a parent's embrace, intended to calm the startle reflex that can wake a sleeping baby. 

Many swaddles require intricate folding and wrapping, but this clever design simplifies the process with a two-way zipper, which is a blessing for midnight diaper changes. 

  • Supports baby's self-soothing by allowing arms up position
  • Swift diaper changes due to two-way zipper design
  • Recognized by the International Hip Dysplasia Institute as hip-healthy
  • Comes in different tog weights
  • Will not suit babies who prefer to sleep with their arms down
  • Higher price point than average swaddle
  • Limited use, as babies outgrow swaddling
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4. Happiest Baby Snoo Sleep Sack

Despite being slightly on the pricey side, I cannot ignore this sleep sack on my list of best newborn sleep sacks to consider. Designed by the famous pediatrician and hip-safe expert Dr. Harvy Karp who designed the SNOO Bassinet, parents can rest assured that this is a sleep sack of the highest and safest quality.

Happiest Baby SNOO Sleep Sack - 100% Organic Cotton

If you have a SNOO Bassinet... or are considering buying one... These Happiest Baby Sleep Sacks are the perfect transitional swaddle that can take your newborn from full swaddling to arms out in readiness for a conventional sleep sack.

They have been proven to help with self-soothing and keep baby sleeping longer than other swaddles.

The patented wings can be attached to the SNOO Bassinet to help keep baby in place while they are sleeping and the inner arm and leg bands help to keep baby safely in position all night long.

  • Made of 100% organic cotton
  • Approved by the Hip Dysplasia Institute
  • Has a unique breathable shoulder mesh to prevent overheating
  • It is designed to interface with the Snoo Bassinet which not all parents will have.
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Looking to get your little one to sleep quickly and effortlessly? Check out my Bedtime and Nap Cheat Sheet and master the art of making daytime naps and bedtimes as seamless as possible.

Buying Guide When Choosing Newborn Sleep Sacks

If my newborn sleep sacks are not quite what you are looking for, or if you decide to do a bit more digging to find your perfect newborn sleep sack, it’s important to examine certain features before making a purchase:

By considering these aspects, you can make an informed choice for a newborn’s restful sleep.

Remember that in addition to choosing the right sleep sack having a consistent and recognizable sleep routine in an environment that is conducive to sleep will go a long way to ensuring your baby sleeps well.

Newborn Sleep Sack SNOO Bassinet

Tog Guide For Sleep Sacks

The ideal room temperature for your baby’s sleep space is between 16-20°C (60-68°F) combined with light bedding or a lightweight well-fitting baby sleep bag, to offer a comfortable and safe sleeping environment.

If your baby’s room is cooler or warmer, you will need to add or remove layers to ensure your baby is comfortable. Here is a handy guide to dress your baby appropriately for bed:

Baby Sleep Temperature Chart At Night

Frequently Asked Questions: Choosing Newborn Sleep Sacks

Choosing the right sleep sack for your newborn is essential for comfort and safety. We’ve compiled a list of frequently asked questions to help guide you through the process.

Q: How do I choose the right-sized sleep sack for my newborn?

A: When selecting a sleep sack size, look at your baby’s weight and length. Manufacturers provide size charts, which you can follow to find the best fit. The sack must be neither too tight nor too loose. If you’re ever unsure, you can buy multiple sizes online and return the ones that do not fit properly.

Q: What are the safety considerations when using a sleep sack for a newborn?

A: Safety always comes first with your newborn, so ensure the sleep sack fits properly without being too restrictive. The neck and arm openings should be the right size to prevent slipping. Also, choose sleep sacks with no loose parts or hazardous materials.

Q: Can a sleep sack help my newborn sleep better through the night?

A: A sleep sack can provide a cozy and secure environment akin to the womb. This comfort often leads to better sleep. However, you must ensure a consistent sleep routine to promote a full night’s sleep too.

Q: What is the difference between a sleep sack and a swaddle?

A: Swaddles are tightly wrapped blankets that soothe newborns by preventing the startle reflex, typically used until baby is 3 months old. Sleep sacks are wearable blankets (which look like sacks!) that allow for more movement and can be used from infancy into toddlerhood, providing warmth and safety without the risks of loose bedding.

Q: What are the best materials for newborn sleep sacks for optimal comfort and safety?

A: I prefer sleep sacks made from breathable materials like cotton, bamboo, or merino wool. These fabrics promote temperature regulation and are soft on delicate skin. Avoid materials that can overheat or irritate our newborn’s skin.

Q: How do I transition my newborn from a swaddle to a sleep sack?

A: To transition a newborn from a swaddle to a sleep sack, first allow one arm out of the swaddle for a few nights, then the other. Some transitional swaddles on the market can make the transition to a sleep sack go more smoothly. After that, introduce the sleep sack, which still offers a snug feeling but more freedom. This step-by-step approach eases your baby into the change.

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Author Image Bio
Paula McLaren is the founder of Teething to Tantrums and a highly qualified childcare expert with over 40 years of experience as a Norland Nanny. She holds a BA (Hons) in Early Years Development & Learning (0-6 Years) and the prestigious Norland Diploma. Paula has worked as a night nanny, run a successful daycare center in London, and helped raise countless children using her tried and tested developmental and guidance methods.

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