The Best Sleep Sacks of 2026

Written by Kate Tully Ellsworth, executive editor and commerce content specialist who oversees editorial coverage of pets, streaming, sleep, health and fitness, sex toys, style, and parenting.

Updated April 3, 2025

Once your baby has outgrown her swaddle, it’s time to start looking into sleep sacks and wearable blankets. Since your baby is still too little to safely sleep with a blanket according to the American Academy of Pediatrics (AAP), a sleep sack could be your saving grace.

Unlike swaddles—which you should ditch as soon as your baby can start rolling over—sleep sacks allow babies to sleep with their arms out. They often feature a flowy bottom that provides room for babies to move around, which is helpful for the day they start doing gymnastics around the crib.

My daughter Vivienne spent the past four months testing out sleep sacks. With the help of a professional product tester (me), we determined the best sleep sack is the Halo SleepSack Cotton Wearable Blanket. It’s inexpensive, it’s easy to put on, and it allows my daughter the comfort of a blanket without actually having a blanket in her crib.

For a sleep sack that’s most like a traditional blanket, we love the LouLou Lollipop Sleep Bag. It was the longest sack we tested, allowing my baby to snuggle it without wrapping it around her. It’s breathable and cozy without breaking the budget.

Other Sleep Sacks We Tested

Baby Deedee Sleep Nest Lite

• Zipper type: Single zipper, bottom-open
• Weight limit: 16-24lb
• Height limit: 26-30in
• OEKO-TEX certified: No

The Baby Deedee Sleep Nest isn’t cheap—it’s about $36 per sleep sack—and doesn’t provide much that sets it apart from higher ranking sacks on our list. It’s comfortable and comes in a few fun color combinations, but it comes with snap-on shoulder straps that we did not enjoy during testing. They got in my baby’s way of holding the fabric near her shoulder, and while she slept, they got in the way as she turned her head.

Pros

• Long

• Zips from bottom

Cons

• Buttons on shoulders

• Zipper not covered at neck

$34.99 from Amazon

Burt's Bees Baby A-Bee-C Organic Beekeeper

• Zipper type: Single zipper, bottom-open
• Weight limit: 16-24lb
• Height limit: 26-30in
• OEKO-TEX certified: No

I’m a huge fan of Burt’s Bees Baby, but I was pretty disappointed with the brand’s sleep sack when compared to other top-performers we tested. The fabric is incredibly cozy and the sack doesn’t come with a tag, but the zipper is not great—it gets in the way and easily sticks to the fabric. It also zips from the top, which means it’s not great for middle-of-the-night diaper changes.

Pros

• Long

• No tag

• Comfy

Cons

• Flimsy zipper

• Zipper only goes one way

$19.63 from Amazon

Tillyou Sleep Sack

• Zipper type: Single zipper, bottom-open
• Weight limit: 16-24lb
• Height limit: 26-30in
• OEKO-TEX certified: No

TillYou sleep sacks had some really cute patterns, but that’s just about all they had going for them. They’re ridiculously cheap—you can snag two sleep sacks for the same price as our top choice, the Halo SleepSack. But you’re better off buying just one Halo. TillYou sacks were extremely thin with a poor zipper construction. There were quite a few strings hanging off the stitching (never fun to have loose strings in reach of an infant) and they didn’t seem to do much for warmth or comfort for my baby.

Pros

• Cute patterns

Cons

• Poor construction

• Feels cheap

Sleep sacks we didn't test

Dreamland Baby Bamboo Classic Sleep Sack (Non-Weighted)

• Zipper type: Single zipper, bottom-open
• Weight limit: 16-24lb
• Height limit: 26-30in
• OEKO-TEX certified: No

Dreamland’s sleep sack is incredibly soft and cozy—but it’s also heavy. The American Academy of Pediatrics (AAP) warns against using weighted sleep products for babies, and in April 2024, major retailers like Amazon, Target, and Babylist stopped selling them. Dreamland in particular has been called out quite a bit for its weighted sleep sacks (as has brand Nested Bean), but the sack we tested was not weighted. It was, however, still quite dense. When I weighed, it came out to 11.85 ounces (other sacks tested here were between 5 and 7 ounces on average). It was enough weight to give me pause and cause me to check (and re-check) that the sack I was testing was not, in fact, weighted.

Frankly, it was too heavy for me to comfortably test. I reached out to the AAP to see if they had any guidelines about the actual recommended weight of sleep sacks—they did not; they only noted that weighted sleep sacks were not recommended. While we strive to provide our readers with accurate testing data from all products, we have to make gut calls sometimes. Without further guidance from leading agencies on what weights are appropriate for infant sleep sacks, I didn't feel comfortable enough putting this one on my baby.

Pros

• Incredibly soft

• Great designs

Cons

• Heavy

• Zipper secures backwards

$53.98 from Amazon

The Tester

My name is Kate Tully Ellsworth and I’ve got a chipper 11-month-old baby girl, Vivienne, who has been testing sleep sacks for the past five months. Vivienne’s a tall baby (over 75% percentile for height) with an average weight (around 50% percentile for weight). She sleeps in a sleep sack with a Nanit band wrapped around her belly.

Though she’s not even one year old, Vivienne is an experienced product tester. She’s tried out swaddles, play kits, and clothing brands for Reviewed.

How We Tested Sleep Sacks

Vivienne tried out nine sleep sacks from a range of popular brands, including Halo, Kyte Baby, and Ollie. She had the easy job—she slept in each sack.

My job was tougher. I first washed each sleep sack per its manufacturer’s instructions, then I placed my baby in the sack to see how easy it was. I paid close attention to its fit and how easy it was to secure. I closely evaluated each sack for its texture, its zipper quality, its feel, its ease of operating during a diaper change, and how comfortable my baby seemed.

What Is A Sleep Sack?

A sleep sack is a wearable blanket that your baby can snooze with. Since you want to keep your crib clear of loose objects like blankets, a sleep sack can allow them to doze off safely while staying cozy.

What To Look For In A Sleep Sack

Since a sleep sack is basically a blanket with arms, you’d think they’d all look and feel generally similar. For the most part, they do, but there are a lot of variations when it comes to features, weights, designs, and shapes. Here are a few things to consider when you’re shopping for a sleep sack:

Material: When we tested sleep sacks, we awarded extra points for those made with OEKO-TEX certified fabrics. You want your baby sleeping in a breathable fabric that will keep them warm without feeling overheated.
Zipper construction: Just because your baby is in a sleep sack doesn’t mean you’re free from those nighttime diaper changes. Pick one with a zipper construction that won’t be a nightmare at 3am. We awarded the most points to J-shaped zippers that allowed us to free baby bottoms without needing to actually remove parts of the sack.
Fit: In my house, Vivienne sleeps with a Nanit band around her chest, so I don’t want a sleep sack that is already tightly wound around her waist (like The Alphie). I want a free-flowing sack, like the Halo or Burt’s Bees Baby sacks. You want your baby to always have full movement of their arms once they can roll, so make sure you pick a sack that allows them to be as free as you’re comfortable with. Weight: Never purchase a weighted sleep sack for your baby.
Price: The sleep sacks we tested tended to be in the $20-30 range, with the most expensive being The Alphie at $79. Price can be a limiting factor for some families, especially if you want to purchase more than one (we have three—two for home and one for daycare). If you fall in love with a sleep sack that costs more than $30, make sure it’s got the bells and whistles you’re confident you’ll use every day in your home. Otherwise, opt for a cheaper sack.

Are Weighted Sleep Sacks Safe?

Weighted sleep products do not have the backing of any major agency, as there is no evidence that they’re safe for babies to sleep in. In fact, the AAP recommends that parents avoid weighted sleep products, as do the National Institutes of Health (NIH), Centers for Disease Control and Prevention (CDC), and Consumer Product Safety Commission (CPSC).

In June 2023, the AAP wrote a letter to the CPSC asking them to develop more vigorous testing parameters for weighted sleep products for infants. The agency claimed weighted sleep products “are associated with concerning reductions in oxygen saturation levels in infants.” The AAP has a stellar reputation when it comes to safe sleep guidelines—since it announced its Safe Sleep campaign in 1994, Sudden Infant Death Syndrome (SIDS) deaths have reduced by 70%.

In April 2024, Amazon, Target, and Babylist stopped selling weighted sleep products.

There are two major brands in the weighted infant sleep product space—Dreamland and Nested Bean. On the Dreamland website, the brand claims, “Dreamland Baby is in ongoing dialogue with the AAP regarding its stance on weighted sleepwear and hopes it will result in the statement being retracted.” In December 2023, Senator Richard Blumenthal wrote a letter to both brands urging both to stop saying their sacks were safe for infants.

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