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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On Sale
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!
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.
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)
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.)
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.
I swear these are the secret to my son sleeping through the night! I didn’t do any sleep training other than having a nighttime routine of a bath, change, and sound machine but he never slept through the night. I was gifted a nested bean sack and started using it when he was around 1 month, he’s been sleeping through the night every night since then. He’s 3.5 months old now so I made sure to order the mediums for him and will be back for more!
Crystal B.
I couldn't be more thankful for these Zen sleepers. They've made bedtime SO MUCH MORE EASY. He used to fight so hard to stay awake, but this really has helped tremendously. I wanted to try Nested Bean with my two older children but never had the chance. This time around, I'm almost happy he had sleep issues so I could snag these up and give them a whirl. Game changers and life savers!
Jessie
I really like the sleep sacks from Nested Bean. My baby is breast fed so her sleep stretches are a little smaller than a formula fed baby. The sleep sack helps my little one get a 5-6 hour stretch at night.
Stephanie S.
Our girl loves her nested bean. We love that she sleeps through the night, never wakes up cold without a blanket, and that the quality of the material will stand up to washing or being handed down.
Katelyn C.
I love these sacks, my kiddo has been a better sleeper ever since we put her in one, and we live where its cold and snows so sometime her room gets cold and the quilted sack is perfect like a blanket! I recommend these
Luvy G.
The combo is perfect! I live in Florida and the classic sac is for everyday and the quilted is for cool days. I bought the 6-12 months sacs because the 0-6 was already tight by her armpits. My daughter is 3 months 16 pounds and she has a lot of room to move her legs around. The material is very soft and she sleeps literally like a baby. She already knows that once the sac is on, it’s bedtime.
nicole s.
The sack is great but there is a design flaw... the male part of the snaps should be on the chest part because when lying baby down they may hurt their head. The famale part of the snap should be oh the back and the male part on the chest
Paula N.
Wished the weighted sack was a little bit more weighted. My baby kept waking up. I do like the material of the quilted sack for cooler nights to keep her warm .
Brittany Z.
I love the new changes. I have one from 5 years ago and it’s still in amazing condition, i only got new ones so u could rotate and wash them and still have one for baby to sleep with. I know that my baby is going to stay warm at night and will still be able to sleep safe at the same time. Also the purple color is so cute!
Erica G.
Love this! My daughter is a tummy sleeper and loves to faceplant into her mattress. Love that we can flip the sac around for her.
Timmy-Jae M.
We like the sleep sack as it is, however we bought it hoping to help my baby sleep a little better and so far that hasn't been the case at all. I can't expect a sleep sack to help solve all our sleep issues so I think it's fine just as a good weighted sleep sack. No complaints otherwise. We like the zipper too, super convenient and easy for night changes.
Jennifer C.
I didn’t know which one to buy, and the Nested Bean was recommended to me by a friend. At 3 mo, my little one was 16 lbs so I opted for the Zen sack 6-12 mo. I purchased this because she outgrew her swaddle. It took a few days for her to transition from the swaddle to the sack but she did it and continues to sleep well at night. Thank you!
Jazmin
Good quality
Briana
Great quality and baby sleeps very well with it on!
Jennifer F.
I’m sad to say these sleep sacks did not make a difference in our baby’s sleep. Had high hopes after reading the reviews…
They seem like nice quality and we will continue to use them though. Just not the miracle I was hoping for.
James N.
My baby slept better on the first night after we started using this.
Whitney H.
I swear these are the secret to my son sleeping through the night! I didn’t do any sleep training other than having a nighttime routine of a bath, change, and sound machine but he never slept through the night. I was gifted a nested bean sack and started using it when he was around 1 month, he’s been sleeping through the night every night since then. He’s 3.5 months old now so I made sure to order the mediums for him and will be back for more!
Crystal B.
I couldn't be more thankful for these Zen sleepers. They've made bedtime SO MUCH MORE EASY. He used to fight so hard to stay awake, but this really has helped tremendously. I wanted to try Nested Bean with my two older children but never had the chance. This time around, I'm almost happy he had sleep issues so I could snag these up and give them a whirl. Game changers and life savers!
Jessie
I really like the sleep sacks from Nested Bean. My baby is breast fed so her sleep stretches are a little smaller than a formula fed baby. The sleep sack helps my little one get a 5-6 hour stretch at night.
Stephanie S.
Our girl loves her nested bean. We love that she sleeps through the night, never wakes up cold without a blanket, and that the quality of the material will stand up to washing or being handed down.
Katelyn C.
I love these sacks, my kiddo has been a better sleeper ever since we put her in one, and we live where its cold and snows so sometime her room gets cold and the quilted sack is perfect like a blanket! I recommend these
Luvy G.
The combo is perfect! I live in Florida and the classic sac is for everyday and the quilted is for cool days. I bought the 6-12 months sacs because the 0-6 was already tight by her armpits. My daughter is 3 months 16 pounds and she has a lot of room to move her legs around. The material is very soft and she sleeps literally like a baby. She already knows that once the sac is on, it’s bedtime.
nicole s.
The sack is great but there is a design flaw... the male part of the snaps should be on the chest part because when lying baby down they may hurt their head. The famale part of the snap should be oh the back and the male part on the chest
Paula N.
Wished the weighted sack was a little bit more weighted. My baby kept waking up. I do like the material of the quilted sack for cooler nights to keep her warm .
Brittany Z.
I love the new changes. I have one from 5 years ago and it’s still in amazing condition, i only got new ones so u could rotate and wash them and still have one for baby to sleep with. I know that my baby is going to stay warm at night and will still be able to sleep safe at the same time. Also the purple color is so cute!
Erica G.
Love this! My daughter is a tummy sleeper and loves to faceplant into her mattress. Love that we can flip the sac around for her.
Timmy-Jae M.
We like the sleep sack as it is, however we bought it hoping to help my baby sleep a little better and so far that hasn't been the case at all. I can't expect a sleep sack to help solve all our sleep issues so I think it's fine just as a good weighted sleep sack. No complaints otherwise. We like the zipper too, super convenient and easy for night changes.
Jennifer C.
I didn’t know which one to buy, and the Nested Bean was recommended to me by a friend. At 3 mo, my little one was 16 lbs so I opted for the Zen sack 6-12 mo. I purchased this because she outgrew her swaddle. It took a few days for her to transition from the swaddle to the sack but she did it and continues to sleep well at night. Thank you!
Jazmin
Good quality
Briana
Great quality and baby sleeps very well with it on!
Jennifer F.
I’m sad to say these sleep sacks did not make a difference in our baby’s sleep. Had high hopes after reading the reviews…
They seem like nice quality and we will continue to use them though. Just not the miracle I was hoping for.
James N.
My baby slept better on the first night after we started using this.
Queries Related to Zen Sack™ Classic | Wearable Newborn Sleep Sack
All Zen sleep sacks feature a built-in Cuddle Pad™, which weighs just 30 grams (Small size) 60 grams (Medium size) and 90 grams (Large size and distributed across the chest). Our baby sleep sacks are safely weighted in key areas as opposed to all-weighted sleep sacks or weighted blankets, which the AAP has deemed unsafe for infants.
Nested Bean offers a variety of Zen Sack® Weighted Sleep Sack options, each crafted to comfort like your touch while meeting your baby's sleep needs across seasons.
The difference between our weighted sleep sacks is the fabric used for construction.
Zen Sack® Classic is a year-round weighted sleep sack made from 100% breathable cotton.
Zen Sack® Premier combines 70% rayon from bamboo for softness and 30% cotton for strength, making it a lightweight baby sleep sack, perfect for warmer climates.
Zen Sack® Winter is our warmest Nested Bean weighted sleep sack, with a 2.5 TOG and plush poly-fiber filling, perfect for colder nights.
And, Zen Sack® Quilted is a transitional Zen Sack™ weighted sleep sack ideal for fall-like temperatures.
Absolutely. Every Nested Bean weighted sleep sack is designed for safe use once babies start rolling. With flexible Cuddle Pads™ that flatten as baby moves, these newborn sleep sack alternatives support tummy, side, and back sleepers. For tummy sleepers, the Zen Sack™ weighted sleep sack can even be worn backwards for added comfort.
The Cuddle Effect™ is the calming, feel-good response babies experience when gently held. Our Zen sleep sack collection is built around this science. Thanks to our lightly weighted Cuddle Pads™, each weighted sleep sack mimics your soothing touch, helping babies relax, sleep deeper, and develop better.
Yes! Every Zen Sack™ weighted sleep sack meets or exceeds Consumer Product Safety Commission (CPSC) standards, including flammability and construction. Our Cuddle Pads™ are breathable, securely stitched, and designed to never restrict movement, making them a safe baby sleep sack choice for all sleep positions. This newborn sleepwear is rigorously tested for safety.
When your baby begins rolling, it’s time to transition from swaddling to a Nested Bean weighted sleep sack. The Zen Sack™ makes this transition smoother with its calming, lightly weighted design, offering your little one uninterrupted, longer sleep.
While each baby is different, most parents see improved sleep in just 1–3 nights after switching to a Zen sleep sack. The comforting weight and cozy fit work quickly to help babies self-soothe and stay asleep longer. This newborn sleepwear delivers faster results than traditional sleep aids.
Each Nested Bean weighted sleep sack includes adjustable shoulder snaps, allowing your Zen sleep sack to grow with your baby. This feature ensures a snug fit early on, with room to expand as your little one grows. This sleepwear for newborn design maximizes value and usability.
Yes! Every Nested Bean weighted sleep sack is crafted from high-quality, machine-washable fabrics. For best results, wash cold on a gentle cycle and tumble dry on low, keeping your baby sleep sack soft, safe, and long-lasting. Proper care maintains the quality of this premium newborn sleepwear.
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.
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