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Article: The Top 7 Best Baby Sleep Sacks of 2025

The Top 7 Best Baby Sleep Sacks of 2025

The Top 7 Best Baby Sleep Sacks of 2025

Which Is the Best Sleep Sack for Baby? Options that Are Safe for Sleep

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Updated

Something about snuggling under the covers makes bedtime cozy, but babies can't have loose blankets in their sleep space. Sleep sacks are the perfect alternative. They’re safe for babies and toddlers while also providing that extra comfort at bedtime. Plus, they stay in place so your toddler won't throw all the covers off and end up shivering by morning.

In This Article

Which baby and toddler sleep sacks are best? Read on to learn more about our top picks for wearable baby sleep bags made of natural materials.

The Best Sleep Sacks for Babies and Toddlers

 Product Material Size
Design TOG
Woolino Merino wool and organic cotton Universal, 2 months to 2 years Zipper on side and bottom 63° to 75° F
Halo Bamboo and polyester filling 4 sizes, birth to 24 months Zipper down middle 68° to 72° F
Love to Dream Jersey cotton 2 sizes, 6 to 36 months Zipper down middle, has long sleeves 68° to 75° F
Pehr Organic cotton 2 sizes, birth to 18 months Zipper down front to side seem 75° to 81° F
Baby Mori Organic cotton and bamboo and polyester filling Universal size, up to 2 years Zipper down the sides, snaps at the arms, stroller belt opening 64° to 75° F
Make Make Organics Organic cotton muslin Universal size, 3 to 24 months Snaps at shoulders, zipper down the side None listed
Burts Bees Organic cotton 4 sizes, birth to 24 months Zipper on side and bottom 75° to 80° F

 

1. Woolino 4 Season Merino Wool Wearable Blanket

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Woolino sleep bags are so soft you'll think you're dreaming when you touch them. Seriously, merino wool is one of the skilkiest, softest fabrics on the planet. Your baby will feel like they're floating on a cloud with merino wool on their skin.

As if that weren't enough, the wool offers impressive temperature regulation. You can use this one sleep sack year-round, as it keeps baby warm in cold weather and cool in warm weather.

You may get sticker shock on this one, but the Woolino wearable blanket is worth it. Whereas with other sacks you'd have to buy different sizes as your baby grows, this one fits through toddlerhood. Plus, you won't need several sleep sacks to rotate through as the seasons change. This one is perfect for winter, summer, and everything in between.

The Details

  • Materials: Merino wool lining, organic cotton cover
  • Sizing: Comes in various sizes, including a universal size for 2 months old to 2 years. It grows with your baby! For older toddlers, try the 2 to 4-year-old size.
  • Design: Zippers that open at the side and bottom, or just the bottom for nighttime diaper changes. A travel-friendly, closable seatbelt opening makes for easy transfers.
  • TOG or Temperature Recommendation: Ideal for temperatures from 63 to 75 degrees F.

2. Halo Bamboo Sleep Sack

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Keep your baby cozy and warm with this soft sleep sack by Halo. What we love most about this one is that it is slightly heavier than the average wearable blanket, thanks to its three layers. Try this one to transition out of the swaddle for a safe, yet comfortable sleeping environment.

The Details

  • Materials: Bamboo fabric and polyester filling.
  • Sizing: Comes in small (0 to 6 months), medium (6 to 12 months), large (12 to 18 months), and extra large (18 to 24 months)
  • Design: Zipper down the middle.
  • TOG or Temperature Recommendation: TOG 1.5, ideal for temperatures from 68 to 72 degrees F.

3. Love to Dream Long Sleeve Sleep Bag

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Most sleep sacks don't have sleeves, but Love to Dream keeps your little one's arms warm while they sleep. The smaller size also comes with fold-over cuffs to cover your baby's hands.

The Details

  • Materials: Jersey cotton
  • Sizing: Comes in two sizes, 6 to 18 months and 18 to 36 months
  • Design: Twin zipper down the middle, long sleeves
  • TOG or Temperature Recommendation: TOG 1, ideal for temperatures from 68 to 75 degrees F.

4. Pehr 1 Tog Sleep Bag

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Even in warm weather, your baby needs a signal to sleep. That's where Pehr's organic cotton sleep bag comes in, providing a cuddly layer of love. Choose from three adorable colors.

The Details

  • Materials: Organic cotton
  • Sizing: Comes in two sizes, 0 to 9 months and 9 to 18 months
  • Design: Zipper from front and down the side seam
  • TOG or Temperature Recommendation: TOG 1, ideal for temperatures from 75 to 81  degrees F.

5. Baby Mori Clever Sleeping Bag

best baby sleep sack, baby sleep sack, wearable blanket

Snuggle your baby to sleep in Baby Mori's sleeping bag. Use it throughout the year in both warmer and cooler weather - just adjust what baby wears underneath. Another one-size-fits-all, you can use one sleep sack from infancy throughout toddlerhood.

The Details

  • Materials: Blend of organic cotton and bamboo, polyester fill
  • Sizing: One size fits babies from 8 to 9 pounds up to 2 years old.
  • Design: Zipper down the sides and snaps at the arms. Has a belt opening for strapping into your stroller. Adjustable length.
  • TOG or Temperature Recommendation: TOG 1.5, ideal for temperatures from 64 to 75 degrees F.

6. Make Make Organics Wearable Blanket

best baby sleep sack, baby sleep sack, wearable blanket

Where Make Make Organics wins is their absolutely adorable designs. We're in love with the patterns that mimic watercolor paintings. Plus, one wearable blanket will serve you throughout your little one's infancy and toddlerhood. Cozy and soft, the muslin material is ideal for warmer weather.

The Details

  • Materials: Three layers of organic cotton muslin
  • Sizing: One size fits babies from 3 to 24 months.
  • Design: Snaps at shoulders, zipper down the side.
  • TOG or Temperature Recommendation: No specific recommendations

7. Burts Bees Beekeeper™ Organic Wearable Baby Blanket

best baby sleep sack, baby sleep sack, wearable blanket

In warmer weather, Burts Bees beekeeper™ wearable baby blanket is what you need. Buttery soft, the cotton fabric is lightweight, yet comforting.

The Details

  • Materials: Organic cotton
  • Sizing: Comes in small (0 to 6 months), medium (6 to 12 months), large (12 to 18 months), and extra large (18 to 24 months)
  • Design: Two way zipper opens at bottom or top, moves along the side, and across the bottom.
  • TOG or Temperature Recommendation: TOG 0.5, ideal for temperatures from 75 to 80 degrees F.

What Are Tog Ratings on Sleep Sacks?

TOG is an acronym that stands for "Thermal Overall Grade." A TOG rating indicates how warm a blanket or article of clothing is. The higher the TOG rating, the better it will keep you warm in cold temperatures. Lower TOG ratings are items best for warmer weather.

Each company may have its own TOG rating. Typically, a TOG rating comes alongside temperature recommendations for the ideal air temperature when you use or wear the clothing or blanket.

How to Choose the Best Sleep Sack

Choose a sleep sack based on the temperature in your house, season, and your preferences. You can adjust layers of clothing underneath the sleep sack to adjust for changing temperatures. 

A sleep sack is a cozy wearable blanket, perfect for keeping your baby safe and comfortable while sleeping. Do you have a favorite sleep sack? Let us know in the comments below. 

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Something about snuggling under the covers makes bedtime cozy, but babies can't have loose blankets in their sleep space. Sleep sacks are the perfect alternative. They’re safe for babies and toddle...