Sleeps sacks can be a lifesaver in the winter or when your baby outgrows swaddling. These are the best sleep sacks for your baby on the market!

Kyte baby sleep sack in crib

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Looking for the best sleep sacks for your baby?

These are our favorite baby sleep sacks to keep your baby warm and safe.

What is the Best Baby Sleep Sack?

Sleep sacks are a way to keep your baby warm at night after you’ve dropped the swaddle but before introducing a blanket.

I’m a huge proponent of using wearable blankets as a bedtime routine cue and a way to keep baby safe and warm.

Here are my favorites.

10 Best Sleep Sacks for Babies:

  1. Kyte Baby
  2. Woolino
  3. Gunamuna
  4. Little Sleepies
  5. MiliMili
  6. Halo
  7. Zipadee-Zip
  8. Burt’s Bees
  9. Hudson Baby
  10. Love to Dream

Kyte Baby Sleeping Bag

Kyte Baby has a cult following. I know so many parents who swear by their Kyte Baby sleeping bag.

These sleep sacks are made from a soft bamboo rayon material, making them buttery-smooth to the touch and super cozy.

The Kyte has a double zipper, unzipping from the bottom, which makes middle of the night diaper changes a breeze.

The Kyte Baby Sleeping Bags come in different warmth options, from 0.5 TOG to 2.5 TOG.

As your little one grows and begins to walk, Kyte Baby also has a sleep bag with leg holes for easy movement.

Woolino 4 Season Baby Sleep Sack - Ultimate Merino Wool Baby Sleeping Bag - Two-Way Zipper Adjustable Universal Size Sleep Sack for Baby (2-24 Months) - Birch Gray

Woolino Sleep Sack

Want one sleep sack that you can use for all four seasons and even as your baby grows?

The Woolino has a larger price tag, but its longevity and high-quality manufacturing means it’s durable and favored by many!

The Woolino is made from merino wool. It’s not too light and not too heavy, making it easy to dress your baby warmer or cooler, depending on the season.

You don’t have to worry if baby is too warm or too cold with Woolino’s breathable material.

One unique feature of the Woolino is the closable seat-belt slots. You can put baby in the sleep sack and still safely buckle them up! If you ever have a late night with your baby, you can make an easy transfer from car to crib.

The baby sleep sack comes in a universal size for 2 months through 2 years, so you don’t have to constantly replace them as your baby grows. They also make toddler sleep sacks for older babies!

It has shoulder snaps buttons and a two-way zipper, so it’s easy to slip on and off a sleepy baby during those midnight diaper changes.

Parents LOVE the Woolino due to its versatility and longevity!

GUNAMUNA Unisex Baby Wearable Blanket, Sleep Sack Sleeping Bag for Infants Toddlers, Easy Changing Diaper Zipper, 2.6 TOG, Flora, 9-18 Months

Gunamuna Sleep Bag

The Gunamuna Sleep Bag has down alternative fill and is so incredibly cozy! The ultra-soft bamboo viscose helps keep baby warm and at 2.6 TOG Rating, this is one of the warmer sleep sacks out there.

The three-way zipper can open at the bottom for quick and easy diaper changes, from the top for a traditional way of getting dressed, or even from the sides if need be.

The sizing also has a nice range, fitting babies from three to nine months.

baby sleep sack with Jack Skellington

Little Sleepies

The Little Sleepies sleepy bags are made from the same buttery soft and breathable material as their well-loved pajamas.

The double zipper make diaper changes easy and they’re internally quilted to keep your baby warm and cozy. The Little Sleepies are designed extra long with adjustable shoulder straps, so your baby can wear them for many months!

Not to mention, they have some adorable prints. From The Nightmare Before Christmas to Mermaid theme, these sleep sacks are one-of-a-kind!

MiliMili baby sleep sack

Mili Mili Sleep Sack

I was recently introduced to MiliMili sleep sacks at a conference for sleep consultants and I fell in love with their product.

Not only are the fabrics incredibly soft (made from jersey fabric), breathable, and gentle on sensitive baby skin, but they have the cutest prints to choose from!

Move over stars and moons, these colorful and bold prints are going to make putting baby to bed so much more fun! And, they have fun sleep robes and loungers so you can match your mini too! Shop them all here.

HALO Sleepsack, 100% Cotton Muslin Wearable Blanket, Swaddle Transition Sleeping Bag, TOG 0.5, Grey Open Circles, Medium, 6-12 Months

Halo Sleep Sack

The Halo brand wearable blankets are a favorite of mine and the one we I used with my daughter for years.

The Halo comes in a variety of colors, prints, and fabrics. The lightweight muslin material is perfect for dressing your baby for sleep in the summer and the warmer fleece ones are great for chilly winter months.

They’re also surprisingly affordable given the high quality of their products!

Halo makes sleep sacks for newborns and toddlers, using materials that rank all the way up to 3.0 TOG for cool climates.

All Halo sleep sacks come with an inverted zipper for easy diaper changes!

SleepingBaby Zipadee-Zip Baby Swaddling Blanket 6-12 Months - Transition Swaddle with Zipper Convenience - Busy Road, M

Zipadee-Zip Sleep Sack

The Zipadee-Zip is a great transition swaddle sleep sack when you’re transitioning your baby out of the swaddle. 

This sleep sack has a unique starfish design that keeps your baby enclosed and cozy, but doesn’t limit your little one’s movements while they sleep. It gives your baby a cozier feeling than traditional sleep sacks and is a great transitional piece!

In the Zipadee-Zip, your baby’s arms are covered but still free to move, keeping them safe in case they roll in their sleep. This can be helpful if your baby is rolling but still has their startle reflex waking them up at night.

Their hands are also covered, which is a good option if you worry about keeping your baby’s hands warm at night.

They have multiple fabrics and patterns so there’s something for everyone!

Burt's Bees Baby Baby Beekeeper Wearable Blanket, 100% Organic Cotton, Swaddle Transition Sleeping Bag, Honey Bee Cloud, Medium

Burt’s Bees

Burt’s Bees is a beloved brand of so many parents, and for good reason. Their products are high quality, climate-conscious, and their textiles are made from soft, 100% organic cotton, making them a perfect choice for babies with sensitive skin.

The wearable blanket is made of breathable fabric and comes in a variety of adorable prints, and can unzip from the bottom, making diaper changes so much easier.

Many of their cotton sleep sacks come with a 0.5 TOG rating, making them a great choice for warmer climates. They can also be layered on top of footed pajamas without overheating your little one in the winter.

This is one of the best organic sleep sacks because it’s affordable and comes in plenty of cute prints and different colors!

Hudson Baby Unisex Baby Plush Sleeping Bag, Sack, Blanket, Solid Light Pink Fleece, 18-24 Months

Hudson Baby

The Hudson Baby comes in larger sizes, making it one of the best sleep sacks for toddlers.

Although the sizing tops out at 24 months, many families have shared that the length of this one has lasted them well beyond the two-year mark.

It has both short sleeve and long sleeve options, so you can stock up for all seasons. It’s also available in fleece or minky textures, depending on the feel you’re looking for.

These are very reasonably priced and have a similar look and feel to the Halo.

Love to Dream Swaddle Up Transition Swaddle, Patented Zip-Off Wings, Gently Help Baby Transition from Being Swaddled to Arms Free When Showing Signs of Rolling, 1.0 TOG, 13-19 lbs, Gray

Love to Dream

The snug fit of the Love to Dream Swaddle Up makes it one of the best sleep sacks for newborns.

By keeping your baby’s limbs tighter and closer to their body, it can help prevent your newborn’s startle reflex.

This is also a great option for when your baby starts approaching the age when they need to transition out of the swaddle.

The Swaddle Up transition bag has removable shoulder panels. Once you see the first signs of rolling, you can keep your baby safe by opening the swaddle’s arm holes to free your baby’s arms while they sleep.

Baby Deedee Sleep Nest Sleeping Sack, Warm Baby Sleeping Bag fits Newborns and Infants,Medium (6-18 Months)

Baby Deedee

This winter sleep sack is made from a breathable material that has a similar feel as a quilted duvet, making it extra warm and cozy for those chilly nights!

The outer shell is 100 percent cotton to keep your baby cozy and warm and and is machine washable.

The shoulder straps make it easy to get baby in and out compared to traditional sleep sacks.

They also have a Sleep Nest Lite, which can be a good choice for a summer sleep sack and weather.

baby boy asleep

How to Pick the Best Sleep Sacks

When you’re shopping for the right sleep sack for your baby, there are a few things to consider.


The most important thing to me as a Certified Pediatric Sleep Consultant is your baby’s safety when they sleep. I ask all of the families I work with to follow safe sleep guidelines and the ABCs of safe sleep.  

When it comes to sleep sacks, we need to make sure that it fits correctly and won’t slip off of your sleeping baby. You’ll also want to make sure that all zippers, buttons, and fasteners are secured.

Make sure that you only buy sleep sacks from trusted retailers who have your baby’s safety in mind.


Not all sleep sack sizes are created equal. In fact, sizing can be all over the place depending on which brand you choose.  

Most companies will give an age range (like 3-6 months, 6-12 months, etc.), and some—but not all—make ones that will fit toddlers.  

My advice is to read reviews from customers to see if sizing is consistent. It’s also important to pay attention to the length measurements of the sleep sack, since every baby grows at a different pace!


You’ll be able to find sleep sacks made from all sorts of different textiles and fabrics.  

There are thin muslin sacks for summer months, and thick fleece ones for dressing your baby in the winter months.

There are buttery or plush fabrics, made from cottons, bamboo, and even wool.  

You’ll want to pick a sleep sack that is soft and cozy on your baby’s skin, and also consider how warm or cool the fabric is going to keep your baby.

TOG Rating

When you’re picking out a sleep sack, make sure to pay attention to the TOG rating.  

TOG stands for Thermal Overall Grade and is a way to measure the warmth of a particular fabric. The higher the TOG rating the warmer the fabric will feel to your baby.  

toddler girl sleeping

Frequently Asked Questions About Baby Sleep Sacks

Do Pediatricians Recommend Sleep Sacks?

Pediatricians advise against the use of blankets in the crib before baby’s first birthday.

So to keep baby warm, you can use warm pajamas or a sleep sack once baby has dropped the swaddle.

The AAP does not recommend weighted sleep sacks such as The Nested Bean.

Do Sleep Sacks Reduce SIDS?

A 2019 Study found that baby sleep sacks are safer than alternative bedding when it comes to preventing Sudden Infant Death Syndrome (SIDS).

When Should Babies Stop Wearing Sleep Sacks?

I recommend using one until your baby is ready to transition to a toddler bed. Sometimes using a wearable blanket well into the toddler years for older kids can also help keep your baby from climbing out of the crib!

What is TOG Rating?

TOG stands for Thermal Overall Grade and is a way to measure the warmth of a particular fabric. The higher the TOG rating the warmer the fabric will feel to your baby.  

If you have any questions about the best sleep sacks for baby, leave them below.

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