midnight-planets color--midnight-planets

graphite-planets color--graphite-planets

ivory-snooflakes color--ivory-snooflakes

Baby in unzipped rose planets Sleepea swaddle sack

Baby in zipped-up graphite stars Sleepea swaddle sack with arms out

Baby in zipped-up teal planets Sleepea swaddle sack

Baby in zipped up Graphite Planets Sleepea in moms' arms

Baby unzipped in Ivory Pine Sleepea on changing pad

Baby in Ivory Planets Sleepea in unzipped and zipped up swaddle sack

Baby in Rainbow Tie-Dye Sleepea with arms out

Baby in unzipped Rainbow Tie-Dye Sleepea

Limited Time Offer

Sleepea^® 5-Second Baby Swaddle

Q: Why do babies like sleeping swaddle sacks?

Swaddling is an integral part of Dr. Harvey Karp’s 5 S’s for soothing babies. The comforting womb-like embrace of a swaddle helps to activate Baby’s innate calming reflex, which is their built-in “off switch” for crying and “on switch” for sleep. In fact, swaddled babies are able to respond faster to the other four S’s (shushing, swinging, sucking, and holding baby in the side-stomach position)—and stay soothed longer because their arms can’t wriggle around and bonk them in the face!

$29.95 $20.96 30% Off

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$29.95 $20.96 30% Off

$29.95 $20.96 Out Of Stock

$29.95 $20.96 30% Off

$29.95 $26.95 10% Off

$29.95 $26.95 Out Of Stock

$29.95 $20.96 30% Off

$29.95 $20.96 Out Of Stock

$29.95 $20.96 30% Off

$29.95 $26.95 10% Off

$29.95 $26.95 Out Of Stock

$29.95 $20.96 Out Of Stock

$29.95 $20.96 30% Off

$29.95 $20.96 Out Of Stock

$29.95 $20.96 30% Off

$29.95 $20.96 Out Of Stock

$29.95 $20.96 30% Off

$29.95 $26.95 10% Off

$29.95 $26.95 Out Of Stock

$29.95 $20.96 Out Of Stock

$29.95 $20.96 30% Off

$29.95 $20.96 Out Of Stock

$29.95 $20.96 30% Off

$29.95 $26.95 10% Off

$29.95 $26.95 Out Of Stock

$29.95 $20.96 Out Of Stock

$29.95

Sleepea Swaddle

Sleepea Comforter
Swaddle

Size

Quantity

Color: Ivory Strawberries

Limited Edition

Bundle and Save

Looking for a sack to use in SNOO? Shop our SNOO Sacks.

Products ship within 2 business days of your ship date.

Details

Care

Size Guide

Our award-winning 100% organic cotton 5-Second Swaddle takes the guesswork out of swaddling with a secure wrap...every time. And because Sleepea was created by world-renowned pediatrician Dr. Harvey Karp, you can trust that every detail was designed with baby safety and parent sanity in mind!

Machine wash in cool or cold water with like colors. Never use hot water or chlorine bleach. Tumble dry on a low heat setting, making sure to dry the sack completely or air dry for best results!

Please Note: Before putting Sleepea in the washer, always attach the arm bands & leg flap to each other and zip the sack completely closed. That will avoid damage that might be caused by the fastener clinging to other items in the load.

Small: 5-12 lb
Medium: 12-18 lb
Large: 18-26 lb
X-Large: 26-33 lb

Sleepea^® 5-Second Baby Swaddle

We lost sleep over creating the best baby swaddle so parents don't have to!

Sleepea is the ultra-soft, simple-to-use swaddle that helps babies sleep longer and happier. Our patented 5-Second Swaddle design makes safely wrapping your lovebug as stress-free as can be!

Because Sleepea is made with soft organic cotton and breathable mesh panels, you can rest assured that your little one will not only sleep comfortably all night long (no matter the season), but they’ll snooze safely, too. After all, Sleepea was designed by renowned pediatrician Dr. Harvey Karp, the world’s leading swaddling expert.

Sleepea’s inner flaps give babies the womb-like embrace they love while keeping even mini escape artists securely wrapped and preventing the wild arm movements and nose whacks that can startle them awake. And, unlike most baby swaddles, Sleepea allows for safe arms-out swaddling, making it the perfect transitional swaddle for babies that are almost ready to wave bye-bye to their swaddling days.

For the first 6 months of life, babies should only sleep on the back. If your baby can roll, you should stop swaddling the arms. That’s because babies need to be able to push up in case they roll to the tummy and the face is pressing against the mattress. (Always consult your baby’s doctor for their advice.)

Please note: To create a continuous groovy design, we made our Tie-Dye Sleepea without mesh panels. (That gives you more of our super-soft, all-seasons 100% organic cotton!) Every Tie-Dye Sleepea is hand-dipped, meaning the designs may vary slightly...making each piece (almost) as unique as your sweet baby!

Swaddling With Sleepea is Easy-Peasy!

How to Use Happiest Baby’s Sleepea^® 5-Second Baby Swaddle

Step 1

Place Baby on Sleepea with shoulders about two inches above the neckline and arms straight at sides.

Step 2

Pull bands across Baby's arms and chest, snugly securing. Bring leg flap up between Baby's legs, and attach to the arm band.

Step 3

Zip it up...all the way!

Why Parents Love Sleepea^® 5-Second Baby Swaddle

100% Organic Cotton

Soft, GOTS certified, breathable cotton is gentle on Baby's skin

Secure Inner Flaps

Special inner arm bands and leg flap keep Baby snug all night

Breathable Mesh

All-seasons design keeps Baby cool & comfy

Arms-Out Transition

Snaps at shoulders let you swaddle with one or both arms out

Speedy Two-Way Zipper

Opens from top or bottom for smoother diaper changes

Machine Washable

Cool or cold water with like colors, tumble dry low

Every Detail Designed by America’s Top Pediatrician

Not only does swaddling mimic the snug embrace that sleeping babies love in the womb, it also prevents wild hand movement that can startle little ones awake, keeping your baby safe, happy, and well-rested all night long.

The Award-Winning Swaddle Everyone Is Talking About

"The Winner...This swaddle is magic!"

"The most effective swaddle we tested...it's safe, comfortable, and easy to use!"

Get The Perfect Swaddle in Just 5 Seconds!

Top Awards

Best Baby Swaddle

Cribsie New Arrivals Award

Best of Baby:
"Winner for Top Swaddle"

JPMA Innovation Finalist

Babylist Fresh Find

Best Easy Swaddle

Best Swaddle for Newborns

Best Baby Swaddle

Best Basic Swaddle

Swaddle Best Seller

Approved By

Why Sleepea 5-Second Swaddle?

Swaddling gives your baby the snug embrace they loved in the womb while preventing arm flailing and nose whacks to keep babies snoozing happier and longer. Sleepea 5-Second Swaddle is an all-seasons wrap that keeps babies cool & comfy with a Thermal Overall Grade (TOG) rating of 0.5.

Sleepea Swaddle

Sleepea Comforter
Swaddle

Chart Comparison of a Sleepea Comforter<br>Swaddle

100% organic cotton

Insulated cotton for extra warmth

Insulated cotton

Breathable mesh

Double zipper

Side zipper for easy layering

Side zipper

Pediatrician-designed

Secure inner flaps

Machine washable

Extra-quiet adjustable fastener

Snaps for arms out

Sizes

S, M, L

S, M, L, XL

TOG rating

0.5 TOG
(0.8 TOG for Tie-Dye)

2.0 TOG

Sleepea^® 5-Second Baby Swaddle FAQs

What is a baby swaddle sack?

A sleep sack is, essentially, a wearable blanket. And a swaddle is a lightweight square blanket used to wrap an infant. But a swaddle sack is an amazing combination of the two! Here, you get the ease of zip-up sack, plus the cozy hug of a swaddle that infants crave. (Swaddling is an integral part of Dr. Harvey Karp’s 5 S’s for soothing babies.) Our award-winning, pediatrician-designed Sleepea swaddle sack features breathable organic cotton, an easy-peasy two-way zipper, patented escape-proof inner bands…and ingenious shoulder snaps to allow for arms-out snoozing. Unlike other swaddle sacks, Sleepea’s inovative snaps make it so even rolling babies can continue wearing Sleepea! Once babies show signs of rolling, arms-down swaddling must stop. However, if your baby is rolling—and 26 pounds or less—they can remain in Sleepea with BOTH arms out!

Do swaddle sleep sacks work?

Yes! In fact, zipper swaddle sleep sacks work better than traditional swaddles because there’s virtually no room for error…and they’re far easier to use, especially when half-awake at 2am! With the Sleepea 5-Second Swaddle, there are no origami folds, zero intricate tucking, and you don’t need to cross your fingers hoping nothing unravels…which would be super risky. And you can rest assured that you’re not sacrificing quality for ease-of-use. Sleepea’s patented inner bands offer the same sleep-inducing womb-like hug babies have always loved with traditional swaddles.

How do you use an infant swaddle sack?

Sleepea is so easy to use we call it the 5-second swaddle! Simply place your little one on your unzipped Sleepea with their shoulders about two inches above the neckline. Pull one band across Baby’s straightened arm and chest and secure it—and then the other. Then bring the leg flap up between your baby’s legs, attach it to the already-secured arm bands. Finally, zip Sleepea all the way up and get ready for sweet dreams! It’s no wonder Babylist named Sleepea the Best Easy Swaddle!

What are the benefits of sleep swaddles sacks?

Swaddle sacks not only help to activate your little one’s inborn calming reflex, which is their natural “off switch” for fussing and “on switch” for sleep…swaddle sacks are significantly easier to use than a traditional swaddle blanket. With our Sleepea 5-Second swaddle, once you follow the easy-peasy directions, you know that your baby’s swaddle will always be secure, it’ll always be hip-friendly, and it’ll always keep your bub cool and comfy. There’s never a chance of risky unraveling or accidentally wrapping your baby too tight or too loose! Plus, Sleepea takes all of the stress out of trying to unswaddle and re-swaddle during middle-of-the-night diaper changes.

Should I get a baby swaddle with a zip closure?

If you’re looking to take all of the guesswork out of swaddling, then a ready-made baby swaddle with an easy-to-use zipper is for you! While there are several to choose from, the award-winning Sleepea has proven time and again to be a parent and reviewer favorite. (The New York Times, Romper, The Bump, Healthline, and more have all awarded Sleepea top swaddle honors!) Part of the reason: Our ultra-breathable organic cotton Sleepea swaddle features extra-quiet adjustable fastener and a smooth double zipper that help to prevent light sleepers from startling awake. Plus, Sleepea features patented inner arm bands and leg flap, which work together to create a super-safe, secure, escape-resistant swaddle that babies adore.

Why do babies like sleeping swaddle sacks?

Swaddling is an integral part of Dr. Harvey Karp’s 5 S’s for soothing babies. The comforting womb-like embrace of a swaddle helps to activate Baby’s innate calming reflex, which is their built-in “off switch” for crying and “on switch” for sleep. In fact, swaddled babies are able to respond faster to the other four S’s (shushing, swinging, sucking, and holding baby in the side-stomach position)—and stay soothed longer because their arms can’t wriggle around and bonk them in the face!

Is it better to use a sleep swaddle sack with arms in or out?

Choosing to swaddle your little one with their arms in or out depends on how old your baby is. If you’ve got a young baby, arms-in swaddling is a game-changer for quality sleep. The snug arms-in swaddle best replicates the womb experience, helping to activate Baby’s innate calming reflex that quells crying and brings on sleep. That said, some babies start to get ready for arms-out around 3 to 4 months. (Before then, little ones simply don’t have enough motor control over their arms, so they have a tendency to bonk themselves awake a lot.)

If your baby wakes themselves up when their arms are free, they’re just not ready to transition yet…and that is okay! You want to make sure you go at your baby’s pace. The BIG caveat: If your baby is rolling, you must stop arms-in swaddling immediately. However, if your rolling baby is in Sleepea, you can be comfortable continuing to use it as long as your bub has BOTH arms out—and weighs 26 pounds or less.

Is the Sleepea baby swaddle good for transitioning babies with arms in and out?

Yes! Sleepea is uniquely designed to make weaning from the swaddle easy-peasy. That’s because Sleepea features innovative snaps on each shoulder that allow you to gently pull your baby’s arm through for arms-out sleeping. When you’re ready to transition to arms-out swaddling, it’s best to start with the side your baby favors the most. (Once your baby sleeps well for a few nights with one arm free, you can then let their other arm out.)

Remember, once your baby starts trying to roll over, you need to stop swaddling with both arms down right away, just as the American Academy of Pediatrics recommends. However, even a rolling baby can continue sleeping safely in their Sleepea as long as BOTH arms are out and they don't exceed the max weight limit.

How easy is it to use the zipper on the Sleepea baby swaddle?

Sleepea’s smooth-slide two-way zipper opens from top or bottom making it easier than ever to get your bub in and out of their swaddle quickly and effortlessly. In fact, Forbes recently named Sleepea the Best Swaddle For Newborns, noting that our zipper-and-inner-flap design is “built for speed” and a “cinch to put on.”

Is the Sleepea baby swaddle sack breathable to prevent overheating?

Yes! Sleepea’s all-seasons design—complete with 100% breathable organic cotton and mesh panels at Baby’s shoulders and legs—keep little ones cool and comfy all sleep long.

How secure is the Sleepea baby swaddle? And is it easy for my baby to escape?

Our innovative Sleepea swaddle is super secure! In fact, The New York Times writes that Sleepea is “the most effective [swaddle for] keeping a baby securely wrapped,” even awarding our Happiest Baby swaddle top spot as The Best Baby Swaddle. Sleepea’s ingenious inner arm and leg bands offer babies the womb-like embrace they love, all while expertly (and gently) averting swaddle escape attempts—and wild arm movements and nose whacks that can startle little ones awake.

Is the Sleepea baby swaddle made from organic cotton?

Yes! Sleepea is made from 100% GOTS certified organic cotton, making our Happiest Baby swaddle ultra breathable, super-soft, and gentle as can be on Baby’s delicate skin.

Worked Great for Our 3-4 Month Old!

Had challenges with other swaddles this one did the trick and is still working, he's 4 months now.

Hi Emmanuel,

We’re thrilled to hear that Sleepea worked its magic for your little one and is making those 3–4-month milestones smoother. Here’s to many more peaceful nights for you and your baby! Thanks for sharing :)

Best,
Sonja from the Happiest Baby Team

This is the best swaddle

We had the Aden and anais swaddles and they sucked. We needed something that would last and was simple. This is it! We keep our room at 65° and use the comforter swaddle for that. The tie dye swaddle is .8 tog and great for warmer rooms. It’s honestly so easy to swaddle. My babe is in a size medium right now and it fits great. She’s growing and will be in a large once 18 pounds. She is able to now get her arms out, at 4 months and 14 pounds. When washing we keep the Velcro together so other things don’t get stuck to it and it dries easier. We wash this every couple weeks unless it gets spit up on it. The price is definitely justified with the ease of it, the fact it stays on and in place, and the longevity. Also they are cute designs!

Hi Daena,

Thank you for your thoughtful review! It means the world to us knowing that Sleepea’s simple-to-use design, durability, and snug fit make it your favorite swaddle! We’re glad to hear that our different TOG rating options keep your little one comfy, whether the room is chilly or warm. It sounds like you have everything down perfectly when it comes to washing and transitioning sizes. Wishing you many sleep-filled nights ahead—we're excited to have your little one grow up with Sleepea!

All the best,
Sonja from the Happiest Baby Team

Snuggly and easy

This swaddle is super easy to use and extremely cozy. Baby sleep great when snuggled up in this swaddle. Also, the sizes seem to run a little small. My baby fit great in a size medium starting around 9 lbs.

Hi Alicia,

We love to hear that Sleepea’s easy-to-use design and super soft materials make swaddling easy-breezy and keep your baby cozy for restful sleep!

While our sizing is based on weight, we understand every baby is different. No need to worry if Baby’s feet touch the bottom of the sack—that keeps the legs slightly bent, which aids in developing hips.

Our team would be happy to check the fit so please feel free to connect with us at happiestbaby.com/contactus.

Best,
Sonja from the Happiest Baby Team

A Total Win

We had to stop traditional blanket swaddling when our LO kept squirming out of it around 6 weeks. This was the *only* other swaddle that worked for us—and it really does only take 5-seconds! My only regret is that we didn’t start using it sooner, because he is turning three months soon and we’re going to have to quickly wean him out of it because he’s starting to show signs of rolling. And while he’ll sometimes wiggle his arm out of one side (he’s very determined!), usually if we just tighten up the internal wrap, he will stay nicely bundled all night long. I also do think the weight range is real tight towards the end—he was like a stuffed sausage in a small and was about a pound under the weight limit. Anyway… Just a few things to consider, but overall, we are incredibly happy.

Hi Stephanie,

We love to hear Sleepea does the trick & keeps your wiggly little guy snug for better sleep! For the best Sleepea fit, place your baby’s shoulder 2 inches above the top of the sack, pulling the swaddle up and over. Make sure the band is snug and down over ½ of their hands, covering the wrists.

While our sizing is based on weight, we understand that every baby is different! Our swaddle is designed to fit snug at the top to prevent wild arm movements and mimic the womb, but it’s loose at the bottom to help developing hips. We'd be happy to review the fit and provide additional swaddling tips if needed, so please connect with us at support.happiestbaby.com.

Once your little one shows sign of rolling, you can undo the snaps at the shoulders to allow arms-free for continued safe use. We designed Sleepea to transition with your little one as they reach new developmental milestones.

Best,
Sonja from the Happiest Baby Team

Perfect swaddle!

This is the perfect swaddle! After seeing the halo swaddle bunch up over my baby’s face one night I had to find another solution. This swaddle is just that, no loud Velcro, so easy to use and my baby loves it! I love that it’s breathable and I don’t have to worry about her being too hot like I did with her previous halo swaddles. I wish I had found it sooner and recommend it to all my mom friends! It’s very high quality and holds up well even with daily washes. I bought two more immediately!

Hi Paige,

We love to hear that Sleepea eased all your swaddling worries with its design and breathable fabric. We’re glad that you find it easy to use and that your baby loves it! We appreciate you recommend it to your friends—thanks for being part of the Happiest Baby family!

Best,
Sonja from the Happiest Baby Team

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Limited Time Offer

Sleepea^® 5-Second Baby Swaddle

Limited Time Offer

Sleepea^® 5-Second Baby Swaddle

Sleepea^® 5-Second Baby Swaddle

Swaddling With Sleepea is Easy-Peasy!