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"The first night using this my 4-month-old went from sleeping 3 hours to a full 8!" -Lauren M.
Read more ReviewsZen Sack™ Classic
Wearable Blanket for Infants and Toddlers
$ 49.99
The Zen Sack™ is a safer option to lose blankets. Its Cuddle Pad mimics the gentle feel of your hand to help baby sleep soundly, with fabric options for each season.
- Grows with your baby
- 4 TOG options for any temperature
- Improves sleep in a few nights*
Nested Bean
ZKC605-S
850013617340
39760627663033
Christal H.
This is my third sac! .. my baby sleeps so well! We forgot it once on our trip and never made that mistake again!
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Colby L.
It has been such a smooth transition (from Merlin) and he has continued to sleep through the night!
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Alexa N.
Before getting this sleep sack baby girl really struggled when being put in her bassinet. (Now) she is no longer restless at night and sleeps much longer.
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Jennie J.
My baby always sleeps better when my hand is on her chest, so having the area weighted where my hand would be has been so helpful!
Read reviewOur Zen Sack Classic wearable blanket is designed for self-soothing and sounder sleep. The gently weighted Zen Sack provides uninterrupted comfort by applying pressure only where babies are naturally held. This secure feeling eases the swaddle transition and helps babies self-soothe through sleep disruptions.
The Zen Sack™ is a safer option to lose blankets. Its Cuddle Pad mimics the gentle feel of your hand to help baby sleep soundly, with fabric options for each season.
- Grows with your baby
- 4 TOG options for any temperature
- Improves sleep in a few nights*
The gently weighted Zen Sack helps your baby through every sleep phase. Designed to help babies self-soothe, the Zen Sack eases the transition from swaddle to sack, and cope with sleep regressions and disruptions: An essential for sleep training.
▪ Two-way zipper makes diaper changes a breeze
▪ Zipper covers, cuddly seams and soft tags protect your baby’s skin
▪ Can be worn backwards by tummy sleepers who can roll independently
▪ Grow-with me adjustable snaps
▪ 0.5 TOG comforts in all weathers
Sizes from 0 to 24 months
Fabric details:
▪ 100% breathable cotton, poly-fill, food-grade polypropylene beads
Care details:
▪ Wash in cold water on delicate cycle
▪ Tumble dry on low heat
▪ Gently weighted, designed to mimic your touch
▪ Applies gentle pressure no more than a human palm or car-seat chest clip
▪ Passes mandatory children's product tests
▪ Hip-healthy. Does not hinder mobility
The Zen Sack™ is a safer option to lose blankets. Its Cuddle Pad mimics the gentle feel of your hand to help baby sleep soundly, with fabric options for each season.
- Grows with your baby
- 4 TOG options for any temperature
- Improves sleep in a few nights*
- Mimics your touch to help baby self-soothe and sleep sounder
- Adjustable shoulder snaps for a custom fit as baby grows
- Side zipper makes changing easy without waking baby
- Two-way zipper makes diaper changing easy without undressing
- Gently eases transition from swaddling
- Designed for babies from 0 to 24 months
All are machine washable (cold cycle) and dryer safe (low heat)
- Classic (0.5 TOG): 100% breathable cotton, poly-fill, food-grade polypropylene beads
- Premier (0.3 TOG): Bamboo blend — ultra-light for warmer climates
- Quilted (1.0 TOG): Soft cotton with lightly quilted fill — for cooler weather
- Winter (2.5 TOG): Soft cotton and ultra plush poly-fill — ideal for colder nurseries
- Lightly padded to mimic the warmth of your touch
- Applies gentle pressure no more than a human palm or car-seat chest clip
- Passes mandatory children's product tests
- Designed for tummy sleepers when rolling independently
- Hip healthy. Does not hinder mobility
- Will it really improve my baby’s sleep?
Many of our parents report they and their little ones improved their sleep within 1 to 3 nights. Longer stretches and fewer wakeups. - How is it different from regular swaddles or sleep sacks?
The Zen Sack is the only sleep sack with a patented Cuddle Pad™ that mimics your gentle touch. It’s designed to make sleep feel familiar and comforting especially for babies transitioning out of the swaddle. - Can my baby wear this if they roll?
Never place a baby to sleep on their stomach when they cannot roll independently. For babies who have passed the milestone, the Zen Sack is designed for both back and tummy sleepers. The Cuddle Pad™ is safe for rolling babies and can be worn on the front or back. - Could it cause overheating?
Each Zen Sack is available in a range of TOG levels for different seasons and room temperatures, so you can pick the right one for your baby’s needs to maintain optimal body temperature. (See our TOG guide for help.)
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Zen Sack™ Classic
$ 49.99
Parent-approved tips for every little sleeper
This mom's perfect nap time routine is not complete without the Zen Sack, thanks to its easy and unique features.
Ever had to run to your baby's crib just to pat her back to sleep? The Zen Sack could be the solution.
Tired of premature night wakings? Listen how this mom solved it with the Zen Sack.
The Zen Sack is helping this work from home mom get things done
Crush your sleep goals with the Zen Sack!!
Better Sleep For Your Baby and For You
Thoughtfully designed to support your baby’s sleep journey and give you the confidence every parent deserves.
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Better Sleep For Your Baby and For You
Thoughtfully designed to support your baby’s sleep journey and give you the confidence every parent deserves.
Mimics your touch for better sleep, with just-right warmth for every season.
What It Does:
- Lightly padded chest area for comforting pressure
- Reversible for tummy sleepers*
- Comes in 4 TOGs: 0.3, 0.5, 1.0, and 2.5
How It Helps:
- Provides continuous comfort
- Matches baby’s sleep style
- Keeps baby comfy in any climate
*Only for babies who can roll independently
Grow-with-me design for the perfect fit from 0–24 months.
What It Does:
- Opening at both shoulders for easy changes
- Adjustable snaps at the shoulders
- Easy on and easy off
How It Helps:
- Secures easily around head and shoulders without waking baby
- For ideal fit and safety as your baby grows
- Makes bedtime easier for you both
Because no parent wants to fully undress a sleeping baby.
What It Does:
- Quick diaper changes without waking baby
- Zipper covers protect baby’s skin from irritation
- Tagless neckline
How It Helps:
- Stress-free changes and bed-time routine
- Keeps baby comfy through the night
- Prevents rubbing and discomfort
Perfectly Calibrated
Designed with expert guidance. The Cuddle Pad is gently placed to mimic your touch for babies 7 lbs and up.
Trusted by Millions
Beloved by over 2.5 million families
Grows With Baby
Fits from 0–24 months with adjustable snaps and a roomy design that supports movement and development.
Babies Change Fast. Your Sleep Sack Doesn’t Have To.
- Eases bedtime struggles with built-in sleep cues
- Grows with your baby — no need to rebuy for each stage
- Machine washable, dryer safe, and built to last
- Helps sleep train
- Mimics your soothing touch and provide continuous comfort
- Calms fussiness and helps sounder sleep
- Promotes safer, arms-free sleep once rolling begins
- Supports self-soothing and better rest at every stage
Benefits for parents
- Eases bedtime struggles with built-in sleep cues
- Grows with your baby — no need to rebuy for each stage
- Machine washable, dryer safe, and built to last
- Helps sleep train
Benefits for babies
- Mimics your soothing touch and provide continuous comfort
- Calms fussiness and helps sounder sleep
- Promotes safer, arms-free sleep once rolling begins
- Supports self-soothing and better rest at every stage
Choose the Right Zen Sack™
Tap the thermometer to find your perfect TOG. No guesswork, just better sleep.
Our 3 month old loves the lightweight, softness of this sleep sack! Perfect for the summer weather. - Alexandra H.
Zen Sack™ Premier
I was hesitant but this has definitely helped our 1 month old with her sleeping. She’s so much calmer! Thank you!! - Jagoda B
Zen Sack™ Classic
This has allowed us to get so much more sleep. He goes to bed immediately and stays asleep longer. Will be getting more. - Brice B.
Zen Sack® Quilted
Our 6 week old son struggled sleeping throughout the nights. Now he sleeps 5-6 hours during the night! - Mateusz D.
Zen Sack® Winter
Frequently Bought Together
Good sleep runs in the family.
Contact Us
Reach out to us by email and messenger. We’re always happy to answer any questions you may have.
All About Nested Bean Zen Sleep Sack for Newborns
The Zen Weighted Sleep Sack is machine washable, made from 100% breathable cotton, and designed to self-soothe newborns by helping with sound sleep. Read More
The Zen Weighted Sleep Sack is machine washable, made from 100% breathable cotton, and designed to self-soothe newborns by helping with sound sleep. The Nested Bean Weighted Sleep Sack Classic is a gently weighted breathable baby sleep sack that calms by providing comforting pressure where babies are naturally held.
This secure feeling eases the swaddle transition, encouraging self-soothing and helping babies sleep through disruptions, leading to deeper periods of sleep that are essential for healthy development. This premium newborn sleepwear provides the perfect transition from swaddling to independent sleep.
Safer than loose blankets in your baby's crib, this weighted sleep sack is perfect for babies up to 24 months.
Unlike traditional newborn clothes, this specialized sleepwear for newborn babies is designed specifically for safe overnight sleep.
- Made with 100% bamboo cotton fabric
Incredibly soft and breathable but cozy enough to keep baby warm, the Zen Sleep Sack Classic wearable blanket has a TOG rating of 0.5 for year-round comfort. This newborn sleepwear maintains the perfect temperature for comfortable sleep.
Sizes Available: Small (0-6M) newborn sleep sack; Medium (6-15M); Large (15-24M). See product images to learn more.
- Perfect for tummy sleepers
The Zen Sack Weighted Sleep Sack wearable blanket is reversible and can be worn backward - perfect for babies who roll independently. This sleepwear for newborn adapts to all sleep positions.
- Safely calms with only a few ounces
Designed in line with research from human factors safety experts and pediatric pulmonologists, this weighted sleep sack is safely weighted only where babies need it, not where they don't. The Nested Bean Weighted Sleep Sack has been rigorously tested and is scientifically backed by a recent university-led weight safety study.
- Special features
Unlike a standard baby sleep sack or traditional newborn onesie, the Zen Sleep Sack features gently weighted Cuddle Pad™ technology that soothes like your touch. Adjustable snaps grow with your baby, and a top-quality 2-way zipper ensures easy changes.
- Trusted by over 2 million families
92% of parents reported sleep improvements when using this Zen Sack™ Weighted Sleep Sack.*
*As per consumer research conducted from 2020–2023 involving parents who use Zen Sleepwear products for their infants.
Read LessZen Sleep Sack Reviews
Queries Related to Zen Sack™ Classic | Wearable Newborn Sleep Sack
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How much weight is in the Zen Sack® Classic sleep sack?
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What’s the difference between Nested Bean weighted Sleep Sack products?
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Are Nested Bean weighted baby sleep sacks safe for babies who roll over?
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What is the Cuddle Effect™, and how do Nested Bean sleep sacks trigger it?
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Are Nested Bean Weighted Sleep Sacks safety tested?
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When should I start using a Zen Sack™ Weighted Sleep Sack?
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How quickly do Zen Sack™ Weighted Sleep Sacks work?
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What is TOG and how does it differ between Zen Sacks?
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What is the Grow-with-Me feature in Nested Bean sleep sacks?
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Are Zen Sack™ Weighted Sleep Sacks machine washable?
Zen Sack™, the only weighted sleep sack you’ll ever need
Seamlessly transition from swaddling
When rolling starts, swaddling stops—and some babies miss their cozy swaddle. Prevent wakeups with the gently weighted Zen Sack: So soothing, but tummy sleeper safe.
Stop sleep regressions
Rolling, sitting up, teething: New milestones can mean sleep regressions. Add the gently weighted Zen Sack to your sleep routine to help create positive associations with bedtime.
Help baby sleep through the night
Nighttime wakeups? The gently weighted Zen Sack is so comforting, it helps babies self-soothe—so they fall back to sleep on their own.