6 Best Sleep Sack for Your Baby in 2025

As you expect the arrival of your newborn, I’m sure that you, as a parent, have already started making a list of items to purchase for your baby. Maybe, you’ve even begun purchasing. One item that often makes the list is a sleep sack to help support your baby’s sleep at night. With many brands and cute designs out there, it’s often hard to decide on the best sleep sack.

Hence, we’ve compiled a list of the 6 best ones along with our review of them. Keep scrolling below to see our full review.

Our Top Picks

Best Overall: HALO Sleepsack Wearable Blanket

Best for Winter: Kyte BABY Sleep Bag

Best Transitional: Sleeping Baby Zipadee-Zip by Sleeping Baby

Best for Warm Weather: Burt’s Bees Baby Beekeeper Wearable Blanket

Best for Toddlers: Woolino 4-Season Baby Sleep Bag

Best Budget: Simple Joys by Carter’s Microfleece Sleepbag

What Are Baby Sleep Sacks?

A baby sleep sack is a wearable blanket used to help keep a baby warm and cozy as they sleep. It usually comes sleeveless for babies to be able to move their hands and arms freely without restriction [1].

They are often considered a safer alternative to the regular, loose blankets. Blankets pose the risk of suffocation and strangulation, especially if the baby is kicking around or rolling around in their crib, whereas a sleep sack allows the baby to still move around with the added warmth and comfort.

It’s an effective way of reducing the risk of sudden infant death syndrome (SIDS) and promoting safer sleep [2].

Benefits of Using a Sleep Bag

The benefits of using a sleep sack or a sleep bag include [2]:

• They help to provide a safe and comfortable environment for babies to sleep in, which in turn promotes better sleep quality and sleep duration.
• It allows babies to roll around in bed without the risk of suffocating.
• Sleep sacks also allow babies to move their legs around, promoting healthier hips.

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1. Best Overall: HALO Sleepsack Wearable Blanket SuperSoft Bamboo TOG 1.5

User ratings: 4.8/5 Stars | Price: $39.99

First on the list, we have the HALO Sleepsack Wearable Blanket SuperSoft Bamboo TOG 1.5. The texture of this blanket is buttery soft, as it’s made from bamboo fabric. The 3-layered fabric design is also specially crafted to provide a weighted blanket feel so that your baby would feel warm and secure. It has a thermal overall grade (TOG) rating of 1.5, suitable for all seasons.

There are a few things that I liked about this sleep sack, which are that it is made with a hypoallergenic material, it provides a weighted blanket sensation, and it is approved by the International Hip Dysplasia Institute for being hip-healthy.

As someone with highly sensitive skin, I tend to always look out for hypoallergenic products because I want to avoid aggravating my skin further. If I had a baby, this would 100% be a factor that I would look out for in any bedding or baby products, especially knowing how sensitive and fragile a baby’s skin is. I also find that having the effect of a weighted blanket without the actual weight can be beneficial in soothing a baby to sleep, as it mimics the effect of being hugged.

It’s also a blanket approved by the International Hip Dysplasia Institute, which means that it helps to support healthy hip development, crucial for a baby’s movement and physical development. Additionally, this extra spacious sack comes with a 2-way zipper for convenient diaper changes. Did I mention that it’s also used across 1,800+ hospitals in the U.S.? For all of these reasons, I decided to rate this as the best overall.

Key features

Color options: Calm Sage, Blue Fog, Dusty Pink, Storm Grey

Sizes: Small, Medium, Large, Extra Large

Material: 100% bamboo-viscose shell with 100% polyester filling

TOG rating: 1.5

Care instructions: Wash before first use. Machine wash cold on a gentle cycle and tumble dry low. Do not use bleach, iron, or dry clean. Discontinue upon first sign of damage.

Pros

• Hypoallergenic
• Hip healthy
• 3-layer design provides the weighted feel
• Suitable for all seasons

Cons

• Takes a while to dry
• The zip flap doesn’t fully cover zipper properly

2. Best for Winter: Kyte Baby Sleep Bag 2.5 TOG

User ratings: 4.7/5 Stars | Price: $60

Next up, we have the Kyte Baby Sleep Bag 2.5 TOG, which I’ve selected as the best sleep sack for winter. This sleep bag is made with a silky-smooth rayon fabric derived from bamboo, making it feel ultra-soft and gentle on your baby’s delicate skin. It comes with a TOG rating of 2.5 to support cooler months, so that you don’t need to layer your baby with additional blankets. Layering your baby with additional loose blankets may pose the risk of suffocating if your baby moves around a lot.

I appreciate that this sleep bag is thoughtfully designed to help keep your baby warm without causing them to overheat at night. Bamboo fabric is great for temperature regulation. Given how many parents tend to be more vigilant or highly concerned when it comes to their little ones, I like how Kyte Baby considers that by incorporating adequate features like secure double stitching, a dual zipper, and a zipper garage to ensure the baby’s safety and to protect their skin from irritation.

If I had to nitpick, I’d say that because of its thickness, it takes a bit longer to dry after a wash. Also, the price point may be slightly higher compared to other brands, but you do get what you pay for in terms of quality and comfort.

All in all, if you’re preparing for winter or live in a colder climate, the Kyte BABY 2.5 TOG Sleep Bag is definitely worth the investment for peace of mind and a well-rested baby.

Key features

Color options: Cloud, Oat, Blush, Blush, Sage, Emerald, Slate, Navy, Storm, Midnight

Sizes: Small, Medium, Large

Material: 97% bamboo rayon, 3% spandex with 100% polyester filling

TOG rating: 2.5

Care instructions: Machine wash cold with like fabrics on a gentle cycle. Use a minimal amount of gentle detergent and ensure that zipped up completely to protect the inner quilting. Hang or lay flat to dry.

Pros

• Winter-appropriate with 2.5 TOG insulation
• Made with ultra-soft and breathable fabric
• Zipper garage to protect chafing against baby’s face
• Dual zippers for easy diaper changes

Cons

• Pricier than some other brands
• Material may stain

3. Best Transitional: Sleeping Baby Zipadee-Zip Transition Swaddle

User ratings: 4.3/5 Stars | Price: $38.99

When it comes to transitioning your little one out of a traditional swaddle, the Sleeping Baby Zipadee-Zip Transition Swaddle is my top pick. It’s designed to give babies that cozy, womb-like sensation they love, while still allowing them the freedom to stretch and move. This is a good in-between option for when they may start to roll around and explore their surroundings.

I would say that one of the standout features right away is its unique starfish shape. It provides gentle resistance in the arms, which helps with the startle reflex (so your baby doesn’t wake themselves up), but it’s not restrictive like a tight swaddle. I especially like that it works well for both naps and nighttime sleep, making the transition period much smoother for both baby and parents.

What really makes this one a winner is how easy it is to use. Just zip your baby in and you’re good to go. You don’t need to worry about any complicated wrapping or having to put multiple pieces together. Additionally, the zipper is covered and positioned in a way that helps to ensure the baby’s comfort and safety.

If there’s anything to note, it’s that this sleep sack isn’t super warm on its own, so you might want to pair it with a warmer layer underneath during colder months. But for room-temperature sleeping or warmer climates, I think it’s not a bad option at all.

Overall, the Zipadee-Zip is a great choice for babies ready to transition out of swaddling, offering just enough snugness without the restriction.

Key features

Color options: Heather Grey, Basil, Cherries, Classic Grey, Classic Lavender, Classic Mint, Classic Navy, Dino, Friendly Fox and a lot more

Sizes: XS, S, M, L

Material: 96% polyester, 4% spandex (material may vary slightly by print)

TOG rating: 0.3

Care instructions: Machine wash cold and tumble dry low. Do not bleach or iron.

Pros

• Great for swaddle-to-sleep sack transition
• Lightweight and breathable
• Easy to use with a single zipper
• Wide range of cute designs

Cons

• Not warm enough for winter without layers
• May not provide enough snugness for babies used to tight swaddling

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4. Best for Warm Weather: Burt’s Bees Solid Organic Lightweight Baby Beekeeper Wearable Blanket

User ratings: 4.6/5 Stars | Price: $29.95

If you’re looking for a lightweight sleep sack for warm nights, the Burt’s Bees Baby Beekeeper Wearable Blanket is an excellent go-to. Made from 100% organic cotton, this wearable blanket is incredibly soft, breathable, and gentle on a baby’s sensitive skin. It’s ideal for warmer weather or if your baby tends to get hot or sweat at night.

What I love most about this sleep sack is its simplicity. It has a smooth, soft cotton layer, giving your baby space to move while still keeping them covered and cozy. It kind of feels like you’re wearing an oversized cotton tee with the sleeveless arm opening. This is perfect for summer or warm climates where you don’t want to risk overheating.

Another good feature about this sleep sack is the zipper design. It’s a two-way zipper that helps to make nighttime diaper changes less of a hassle for parents. Again, if you’re worried about skin irritation, there’s a zipper guard and cover to prevent them from happening.

The only downside to this is that, because it’s a lightweight option, it doesn’t offer much insulation. So, it wouldn’t be suitable for colder seasons unless paired with warmer sleepwear underneath. But for hot and humid nights, it’s one of the best choices I’ve come across in terms of both comfort and breathability.

Key features

Color options: Sandy, Nightfall, Oatmeal

Sizes: Small (0–6 months), Medium (6–12 months), Large (12–18 months), X Large (18–24 months)

Material: 100% organic GOTS-certified cotton

TOG rating: 0.5

Care instructions: Machine wash cold, tumble dry low, and avoid bleach or fabric softeners.

Pros

• Lightweight and breathable
• Made with 100% organic cotton
• Gentle on sensitive and eczema-prone skin
• Two-way zipper with safety features

Cons

• Not warm enough for cool nights
• Limited padding

5. Best for Toddlers: Woolino 4-Season Baby Sleep Bag

User ratings: 4.7/5 Stars | Price: $109

If you’re shopping for a high-quality sleep sack that will grow with your little one, consider giving your attention to the Woolino 4-Season Baby Sleep Bag. Designed for year-round use, it’s made with a silky-soft organic cotton exterior and a merino wool lining that naturally regulates temperature. This means you won’t need to switch out sleep sacks with the changing seasons. A big win for busy parents.

One of the standout features is the sizing. It’s made for babies 2 months to 2 years old, so you won’t need to constantly buy new sacks as your child grows. The fabric feels luxurious and breathable, and I also love that it’s hypoallergenic and free from any synthetic fillings or flame retardants. As someone who prioritizes safe and non-toxic sleepwear, I know this would give me the peace of mind if I were a parent.

Another thoughtful detail is the two-way zipper and seatbelt slot, which makes it convenient whether your child is napping in the crib or on the go. It also comes with a handy room thermometer and a detailed dressing guide, which really helps when you’re unsure how to layer your child underneath.

However, it is on the pricier side, I must say. But if you’re looking to get a premium, all-season sleep sack that lasts for years, then I think that this is worth the investment.

Key features

Color options: Cloud, Moonlight, Gray Stars, Night Sky, and more

Size: Baby (2 Months–2 Years), Toddler (2 Years–4 Years)

Material: 100% organic cotton outer, 100% merino wool lining

TOG rating: Suitable for the 4 seasons of use

Care instructions: Machine wash on gentle cycle with wool or mild detergent. Ensure the zipper is closed and tumble dry on no heat or air dry setting. Hang to dry when possible.

Pros

• Temperature-regulating merino wool
• Long-lasting fit
• Suitable to use all year round
• Travel-friendly
• Includes dressing guide and thermometer for baby size

Cons

• High price point compared to other brands
• Drying takes a longer time

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6. Best Budget: Simple Joys by Carter’s Microfleece Sleepbag Wearable Blanket

User ratings: 4.8/5 Stars | Price: $26.99 – $29.99

If you’re looking for an affordable and cozy sleep sack that gets the job done, the Simple Joys by Carter’s Microfleece Sleepbag is a great budget-friendly option. Made from ultra-soft microfleece, it’s perfect for keeping your little one warm during colder nights without breaking the bank.

What I really like about this sleepbag is how simple and practical it is. It’s lightweight enough that your baby won’t feel restricted, but warm enough to keep them comfy throughout the night.

While it doesn’t come with all the bells and whistles of higher-end options (like organic materials or temperature-regulating fabrics), it’s still a solid, reliable choice. Plus, they come in packs of 2 for an affordable price of $26.99 to $29.99. This means that each blanket is only about $13 or so!

If you’re a parent looking for something simple, cozy, and affordable for everyday use, this is a no-brainer.

Key features

Color options: Hearts/Owl, Animal/Stripe, Pink Cat/White Animal

Sizes: Small, Medium, Large

Material: 100% polyester microfleece

TOG rating: No official rating

Care instructions: Machine washable and dryer friendly

Pros

• Budget-friendly price
• Soft and cozy fleece fabric
• Easy front zipper for quick changes
• Available in multipacks
• Machine washable and dryer safe

Cons

• May feel a little snug
• Made from synthetic material (polyester)

Safety Considerations for Sleep Sacks

When it comes to choosing a sleep sack for your baby, you also want to keep the safety features in mind.

For example:

• Does it offer a snug or loose fit?
• Is it made with a breathable fabric?
• Is the zipper secure?
• Does the zipper closure cover well?

Ideally, you should avoid sleep sacks that are loose or heavy, as they can pose a risk to your baby’s safety. To further ensure the safety of your baby, be sure to combine it with safe sleep practices like making sure that they sleep on their backs and keeping the crib free from any loose items or bedding products.

Choosing the Best Sleep Sacks

In case you’re unsure of how to go about choosing the best sleep sack for your baby, here’s a basic guide to help you out:

1. Start by considering the TOG rating, which measures how warm the sleep sack is. Lower TOG ratings ( e.g., 0.5 – 1.0) are best for warmer weather, while higher ratings ( e.g., 2.0 – 2.5) are best suited for chilly weather.
2. Next, you want to pay close attention to the material. Opt for soft, breathable fabrics like cotton, bamboo, or merino wool to help with temperature regulation and ensure that it is gentle on a baby’s skin.
3. Ease of use is also important. Look for sleep sacks with two-way zippers or wide openings for convenient diaper changes.
4. Consider your baby’s age and mobility. Some are snug and swaddle-like, which are ideal for newborns, while some are extra roomy for toddlers.

Do note that this is only a basic guideline to help you get started. The best sleep sack is still dependent on your baby and whether they feel comfortable in it. Be sure to look out for any signs of discomfort when you’re using one for the first time.

If they happen to cry, seem restless, or exhibit physical signs of overheating ( e.g., sweating, flushed face, hot chest) then you want to consider a different option.

Conclusion

All in all, sleep sacks offer a safe and effective way to keep babies warm and comfortable during their sleep. A list of the 6 best sleep sacks has been compiled above to help all the parents seeking a good quality baby wear for their baby to sleep better. By choosing the right sleep sack for your baby, you can reduce the risk of SIDS, a fatal condition.

Aside from high-quality baby blankets, you can also help your baby to fall asleep better by combining it with the use of other sleep products such as ShutEye® app. ShutEye® not only helps you to track sleep cycles, you can also choose from over 100+ lullabies and soothing sleep sounds to play for your baby as they nap or fall asleep at night. Try it now for FREE!

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