HALO Sleeveless Ultra Soft Baby Sleep Sack

Last updated date: February 9, 2022

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HALO Sleeveless Ultra Soft Baby Sleep Sack

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We looked at the top Baby Sleep Sacks and dug through the reviews from some of the most popular review sites. Through this analysis, we've determined the best Baby Sleep Sack you should buy.

Update as February 9, 2022:
Checkout The Best Baby Sleep Sack for a detailed review of all the top baby sleep sacks.

Overall Take

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.

In our analysis of 31 expert reviews, the HALO Sleeveless Ultra Soft Baby Sleep Sack placed 7th when we looked at the top 10 products in the category. For the full ranking, see below.

From The Manufacturer

100% Cotton. Imported. The original wearable blanket replaces loose blankets in the crib for a safer environment; the #1 choice of hospital nurseries to promote safe sleep. Made from 100% cotton interlock fabric with a TOG rating of 0.5, offers just the right comfort for warmer seasons or climates; can be layered with warmer sleepwear for cooler temperatures; double knit construction of cotton interlock fabric makes it extremely soft and a little stretchy, perfect for baby sleepwear. Unique, roomy sack design recognized by the International Hip Dysplasia Institute as “hip healthy” – allows room for kicking but cannot be kicked off, so Baby stays warm and safe all night. Inverted zipper opens from the bottom for easy diaper changes; sleeveless to reduce the risk of overheating; arm and neck openings sized for a safer fit. Available here in Extra-Large size designed for babies weighing between 26 and 36 pounds who are generally 18-24 months old and 35-40 inches long.

Expert Reviews

Expert Summarized Score

6 expert reviews

User Summarized Score

945 user reviews

What experts liked

Material is great, provides warmth and security.
- Baby List
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.
- The Bump
It is machine-washable for easy cleanup. It unzips from the bottom for easy diaper changes. It comes in 4 sizes and 42 different colors.
- Mom Loves Best
It has an inverted zipper (read: easy diaper changes), as well as tons of versatility, fitting baby as she grows. And the sleeveless design will keep baby from overheating.
- What To Expect
The zipper closes at the bottom which makes for easy middle of the night diaper changes and prevents toddlers from unzipping it. The sleeveless design also helps prevent overheating and the roomy neck and armholes let your baby move around comfortably.
- Verywell Family
Recognized as “Hip Healthy” by the International Hip Dysplasia Institute due to the roomy sack design, and the inverted zipper makes for easy diaper changes.
- Thrifty Littles

What experts didn't like

The velcro is LOUD.
- Baby List
Some mothers found the neck hole was too large. Some mothers feel that the zipper is low-quality.
- Mom Loves Best
Thinner than some other sacks.
- What To Expect
They do run large so just be wary of that, though you don't want them to fit too snugly.
- Verywell Family

An Overview On Baby Sleep Sacks

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.

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.

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.

The Baby Sleep Sack Buying Guide

  • 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.