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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® Winter
Wearable Blanket for Infants and Toddlers
$ 59.99
The Zen Sack™ is a safer option to loose 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
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Our 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 loose 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 loose 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® Winter
$ 59.99
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.
Benefits for parents
Benefits for babies
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 Winter Sleep Sack for Newborns
Chilly nights can make it harder for babies to stay asleep and its needed to keep your newborn warm, safely.
The Zen Sack® Winter, our Read More
Chilly nights can make it harder for babies to stay asleep and its needed to keep your newborn warm, safely.
The Zen Sack® Winter, our warmest Nested Bean Winter Sleep Sack, is designed specifically for colder temperatures, with a plush poly-fiber filling and a high 2.5 TOG rating to provide insulated comfort. Unlike bulky blankets (which aren’t safe in cribs), Nested Bean’s warm baby sleep sack combines breathable fabric with gently weighted Cuddle Pad™ technology to calm your little one through sleep disruptions.
It’s more than just winter sleepwear for babies; it’s a scientifically designed, parent-trusted solution that mimics your soothing touch while keeping your baby cozy, secure, and well-rested; all winter long.
Overall, It’s the perfect winter sleep sack for newborns, offering breathable comfort without the risks of bulky blankets in the crib.
- Warmest option available
The Zen Sack® Winter is our coziest winter sleep sack, filled with plush poly-fiber and designed with a 2.5 TOG rating to keep your baby warm through cold nights.
- Designed for winter sleepwear for babies
Breathable yet insulated, our winter sleep sack is ideal solution for chilly nurseries where layering blankets can be unsafe or uncomfortable.
- Gentle weight for soothing sleep
The winter sleep sack features our patented Cuddle Pad™ that mimics your touch, promoting longer, deeper rest even on the coldest nights.
- Safe for newborns and tummy sleepers
This Nested Bean Winter Sleep Sack supports healthy movement and is safe for rolling and side-sleeping babies.
- Better than loose blankets
A secure, wearable design that eliminates risks of blankets in the crib while providing full-body warmth.
- Trusted by parents everywhere
This warm baby sleep sack is part of our award-winning Zen Sleepwear™ line, backed by research and loved by over 2 million families.
*As per consumer research conducted from 2020–2023 involving parents who use Zen Sleepwear products for their infants.
Read LessReal Parent Reviews
Queries Related to Zen Sack® Winter | Winter Sleepwear for Babies
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How much weight is in the Zen Sack® Winter sleep sack?
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What’s the difference between the Zen Sack® Winter and Nested Bean’s other sleep sacks?
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Are Nested Bean winter sleep sacks safe for babies who roll over?
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What is the Cuddle Effect™ and how does the Zen Sack® Winter trigger it?
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Do Nested Bean winter sleep sacks meet industry safety standards?
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How long does it take the Zen Sack® Winter to work?
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What is the Grow-with-Me feature of Nested Bean winter sleep sacks?
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How do Nested Bean winter sleep sacks hold up in the washing machine?
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What is TOG and how does it apply to winter sleep sacks?
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Is the Zen Sack® Winter a good baby shower gift?
Zen Sack®, the only winter 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.