How much weight is in the Zen Sack® Classic 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.

What’s the difference between Nested Bean weighted Sleep Sack products?

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.

Are Nested Bean weighted baby sleep sacks safe for babies who roll over?

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.

What is the Cuddle Effect™, and how do Nested Bean sleep sacks trigger it?

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.

Are Nested Bean Weighted Sleep Sacks safety tested?

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 should I start using a Zen Sack™ Weighted Sleep Sack?

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.

How quickly do Zen Sack™ Weighted Sleep Sacks work?

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.

What is TOG and how does it differ between Zen Sacks?

TOG stands for Thermal Overall Grade, a measure of warmth. Zen Sack™ Classic: 0.5 TOG – ideal baby sleep sack for all seasons Zen Sack™ Premier: 0.3 TOG – breathable newborn sleepwear for hot climates Zen Sack™ Quilted: 1.0 TOG – great for cooler evenings Zen Sack™ Winter: 2.5 TOG – warmest Zen Sack™ weighted sleep sack for cold nights

What is the Grow-with-Me feature in Nested Bean sleep sacks?

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.

Are Zen Sack™ Weighted Sleep Sacks machine washable?

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 Neo™ & Sack™ Classic Newborn Set

Name: Zen Neo™ & Sack™ Classic Newborn Set
Rating: 5.0 (2 reviews)

Wearable Sleep-aid for Infants

42% Off

$ 59.00 ~~$ 101.00~~

Wearable Sleep-aid for Infants

42% Off

$ 59.00 ~~$ 101.00~~

Designed for self-soothing and sounder sleep. The Newborn Bundle eases babies developmental transitions from womb-to-world. The Zen Neo™ and Zen One™ calm like your embrace by providing comforting pressure only where babies are naturally held. This secure feeling eases the womb to world transition and helps babies self-soothe through sleep disruptions.

Cuddle-pad mimics your touch
Grows with your baby
Improves sleep in a few nights*

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0-6 Months

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Trusted by 2.5M+ parents

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 ..(Cuddle Pad™) ..where my hand would be has been so helpful!

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Product Description
Key features
Fabric & Care
Safety
Size

Designed for self-soothing and sounder sleep. The Newborn Bundle eases babies developmental transitions from womb-to-world. The Zen Neo™ and Zen One™ calms like your embrace by providing comforting pressure only where babies are naturally held. This secure feeling eases the womb to world transition and helps babies self-soothe through sleep disruptions.

Cuddle-pad mimics your touch
Grows with your baby
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

Zen Neo:
- Made from 95% breathable cotton and 5% spandex
- TOG: 1.0
Zen One Classic:
- Made from 95% breathable cotton and 5% spandex. The mesh sleeves are 68% nylon and 32% spandex
- TOG: 1.0
Care Details:
- Wash in cold water on delicate cycl
- Tumble dry on low heat.

Cuddle Pad™ 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

Zen Neo Classic Newborn:
- Age: 0-2 months
- Weight: 7-11 lbs / 3-5 kgs
- Height: 19-25 inches / 48-63 cms
Zen One Classic Small:
- Age: 3-6 months
- Weight: 13-18.5 lbs / 6-8.5 kgs
- Height: 22-27.5 inches / 55.5-68.5 cms
* When determining which size is best for your baby, look at the minimum weight, and the maximum height. Your baby should not be below the minimum weight, but they should have at least 2 inches to grow into the maximum height.
The Zen Neo is loaded with parent-friendly features that dramatically simplify swaddling while keeping your baby snug and comforted with a womb-like pod design. It's your new nesting essential.
The versatile Zen One swaddle is designed to mimic the feel of your embrace, and adapts to every sleep style, providing continuous comfort as baby grows.