The Best Baby Sleep Sacks 2025, Tried and Tested

Once your baby starts moving and grooving (AKA getting their roll on), it’s time to graduate from a snuggly swaddle to a super cozy, safe sleep sack that ensures a good night’s rest. Because trust us, you need it.

With so many great options to choose from, we’ve done the research to help narrow down the best baby sleep sacks to add to your newborn checklist.

What to look for in the best baby sleep sacks

The transition out of a swaddle and into a sleep sack can be as hard on parents as it is on infants. Cue the middle of the night Amazon panic purchase in the hopes you’ve finally found “the one” that will get your night owl to snooze longer than a two-hour stretch, ugh. Speaking of which, here's all the free stuff from Amazon you can get if you are in midnight purchase mode.

Because babies under a year old should never have blankets, a sleep sack—which is essentially a wearable blanket—is the next best thing. It's also great sleep cue for your little one, according to baby and toddler sleep expert, Carolynne Harvey, founder of Dream Baby Sleep.

“Zipping your baby into a sleep sack lets them know that it's time to snooze. This also keeps them warm, cozy and safe,” she says. Choosing the best baby sleep sacks is certainly a personal choice, but there are a few factors to consider before adding to cart.

• Fit: Just like clothing, sleep sacks come in a variety of sizes (0-6M, 6-12M, etc.) “Make sure it fits,” says Harvey. “Don't choose loose fabric, especially around your baby's neck and chest.” A large size range is another added perk and keeps sleep sacks safe. “If you find a sleep sack that works great for your child, they can wear it up to age two and even beyond,” notes Harvey.
• Warmth: The ideal temperature for your baby’s room should be between 68-72 degrees Fahrenheit. Consider what your baby is typically dressed in underneath. Sleep sacks with lower TOGs can be a great investment for summer. Choose a higher TOG sack for the colder months.
• Fabric: Harvey prefers natural fabrics like wool, cotton, muslin and bamboo over synthetic ones. But, there’s no right or wrong answer here. “The best way to choose a fabric is to note whether your baby has sensitive skin and how your house generally runs (hot or cold). The sleep sack doesn't make direct contact with your baby's skin though, so don't stress about this too much!”
• Design: The American Academy of Pediatrics (AAP) warns against weighted sleep sacks, so it's best to reduce the risk. “These can restrict a baby's movement, and should not be used,” cautions Harvey. Other features to consider are softness and ease of use, especially for those middle-of-the-night wakings—two-way zippers, FTW! 

The best baby sleep sacks 2025

Best overall

HALO Sleepsack 100% Cotton Wearable Blanket 

HALO gets our vote for best overall thanks to thousands of verified, glowing reviews. The brand’s award-winning wearable blankets are also the leading choice of hospitals nationwide, which means parents trust their babe is safe and snug at bedtime. It truly is the OG baby sleep sack option.

Parents appreciate that it comes in sizes from birth up to two years. If your little one loves it there’s no tough transition out—just size up. Did we mention it’s super roomy too, promoting proper hip development?

The lightweight, 100% cotton muslin fabric is super soft, gentle on baby’s skin. It's also great for warmer climates or families who just don’t like to crank the AC all night.

Pros

• Made of lightweight 100% cotton muslin for temperature regulation and ventilation
• Inverted zipper for easy diaper changes
• Hip-healthy design
• Tons of colors and prints to choose from
• #1 choice of hospitals
• Reasonably priced
• Our top pick, even better than the popular Baby Deedee Zipadee Zip model

Cons

• Some parents report issues with the zipper
• 0.5 TOG rating so may not be warm enough if you keep your house super cold

Best budget

Burt's Bees Baby Organic Beekeeper Wearable Blanket 

There’s a lot of trial and error in finding baby gear your child likes. So a soft, sustainable sleep sack that won’t break the bank at the top of our list. This bestselling Burt’s Bees wearable blanket is under $20.

It’s thoughtfully designed with a zipper that opens from the bottom for fuss-free diaper changes. Interior zipper guards protect delicate skin and a handy zipper pocket to keep your curious toddler from taking it off—because they will try.

Rest assured your mini is dressed in the best and won’t overheat at night thanks to 100% GOTS-certified organic cotton. The Beekeeper also comes in a medium-weight 1.5 TOG rating.

Pros

• 100% GOTS-certified organic cotton
• Comes in a variety of fun prints and patterns
• Under $20
• Machine washable and dryer-friendly
• Zipper guard and cover
• Sustainably made 
• Won't inhibit startle reflex
• Free of synthetic pesticides & chemicals

Cons

• Zipper can be stubborn at times
• Lightweight 0.5 TOG rating, not great for cold households

Best luxury

Woolino 4 Season Ultimate Baby Sleep Sack 

There’s honestly SO much to love about this top-rated Woolino merino wool sleep sack. It comes in one universal size, meaning from age two months to two years you’ll never have to buy a new one.

It also works year-round thanks to its magical merino wool temperature-regulating properties that warm your little one up when it’s cold and cools them off when it’s not. It also features adjustable double-shoulder snaps to achieve the perfect fit on your infant. Cclosable seat-belt slots help you transfer sleeping beauty from bed to stroller—or vice versa.

There are no itchy tags to deal with. Plus, the zipper is sewn into the lining so it won’t scratch your mini. It even comes with a nursery thermometer and handy-dandy guide for properly dressing your baby for the best night’s sleep. 

Pros

• Adjustable underarm snaps for the perfect fit
• Temperature-regulating to ensure your baby is always comfy-cozy 
• One size fits all for babe 2 months to 2 years
• Promotes healthy hip development
• Closable seat-belt slots so you transfer without waking them
• Two-way side zipper
• Worth the splurge
• GOTS-certified organic cotton outer

Cons

• Expensive but also one-and-done
• Use wool or mild detergent and hang dry, which may be a con for some families

Best bamboo

Kyte Baby Unisex Bamboo Sleeping Bag 

As a certified infant and toddler sleep consultant, Harvey loves the Kyte Baby sleep sacks “Because they’re available in different thicknesses for each season, ensuring your baby is always at a comfortable temperature, and they're made of buttery soft, stretchy bamboo rayon.”

Speaking of stretch, they’re designed to grow with your baby so you won’t have to splurge for a new one every few months. It keeps arms free and baby warm without worry.

These super popular sleep sacks are also premium quality, featuring quilting inside to ensure the inner lining never bunches up. Natural temperature-regulating properties keep baby cool and encourage them to sleep through the night.

Pros

• Naturally hypoallergenic for sensitive skin
• Incredibly soft
• Regulates temperature/keeps kids cool
• Available in a bunch of beautiful colors
• Stretchy to grow with them
• Double zipper and flap

Cons

• Can’t go in the dryer

Best design

Loulou Lollipop Tencel 1.0 TOG Sleep Bag 

We’re obsessed with these sustainable Loulou Lollipop sleep bags that come in the cutest prints ever. These super roomy sleep sacks are available in sizes 0 to 6M, 6 to 18M and 18M to 36M, which means your little can wear them for longer before having to size up.

A clever and oversized two-way zipper opens around the bottom making unexpected late-night diaper changes easy— such a simple but thoughtful touch for all us sleep-deprived parents. Manufactured at an OEKO-TEX Standard 100 certified factory, you can rest easy knowing your little one isn’t exposed to any harmful chemicals.

Pros

• Sustainable
• Super roomy to grow with your little one
• Machine washable on delicate and dryer-friendly
• Free of harmful chemicals
• Oversized, two-way zipper
• Stylish prints

Cons

• Slightly expensive

Best trendy

Copper Pearl Vance Sleep Bag 

Over 750+ reviews and a 4.9-star rating = a must-have, obvi! Your little one will be all smiles in this super cool, buttery-soft Vance sleep sack that’s fun, fresh and so right now. Made from a premium knit, breathable fabric, this bag features three luxe layers and an extra plush fill.

It has the perfect amount of stretch and with a 1.7 TOG rating, it’s warm enough—but not too warm—to keep your baby comfortable year-round. The convenient wraparound zipper aids in easy diaper changes and the unique zipper cover protects your kiddo’s skin. Bonus: you can toss them in the wash on cold and tumble dry on low heat. 

We think it's the best sleep sack for social media-ready parents willing to snap adorable pictures on the crib mattress even when baby is fast asleep.

Pros

• Super fun, modern print
• Buttery-soft, breathable fabric
• Wraparound zipper and zipper cover
• Machine washable and dryer-friendly.
• Stretchy

Cons

• Only available in prints, no solid color options

Best for toddlers

Tealbea Dreamsuit 

This premium bamboo and organic Tealbea cotton sleep sack was made for walking. If your toddler is already in a kid's bed or just constantly trips over a traditional sleep bag, upgrade them. They’ll probably want to wear it even when they’re not snoozing.

The fabric is buttery soft, breathable and regulates body temperature while wicking moisture away. With a 1.5 TOG rating, it’s perfect for cooler temps. We love that it's warm enough for them to sleep blanket-free on a toddler mattress.

It's one of the best toddler sleep sacks we've ever seen, and an easy piece for any parent to fall in love with. Fair warning though, it makes climbing out of their baby crib easier if you have a little escape artist. Choose from sizes starting at 12 months up to 4 years.

Pros

• Hypoallergenic for sensitive skin
• Temperature-regulating 
• Wicks away moisture
• Sizes up to four years
• Premium bamboo and organic cotton fabric
• No harmful chemicals

Cons

• Footed, so toddlers can climb out of the crib easier

Easiest to use

Gunamuna 1.0 TOG Sleep Bag 

This luxe sleep sack is a wearable down duvet for little ones. We think it's a total dream for diaper changes thanks to the genius wonderzip diaper-zipper. It also comes with clever shoulder snaps so you can sneak a sleeping baby into it or get ‘em out quickly when they’re crying.

Pros

• Convenient shoulder snaps
• Modern designs and colors
• Certified OEKO-TEX Standard 100, free of toxic chemicals and irritants
• Roomy fit
• Made of soft bamboo viscose and spandex blend
• Breathable, moisture-wicking

Cons

• Air drying is recommended