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Product Use and Safety

We recommend using the Zen Sleepwear™, as directed, for nap time and bedtime. With consistent use, our products will become a key part of your baby's sleep routine, signaling that it is time to fall asleep! 


Nested Bean has been committed to the safety of infants since 2011. This commitment is reflected in our careful product designs, advised by the research studies that we have conducted to date. 

Human Factors expert-led design process confirms that our products are minimally weighted such that they do not pose a significant risk of suffocation when used in an infant's sleep environment.

Our 2022 - 2023 university-led weight safety study indicates that the minimal weight used in our products performs at healthy outcomes.

  • Respiration stays in healthy range
  • Mobility is not hindered
  • Fabric and filling choices do not cause overheating
As we uphold our commitment to build safer products, our efforts to make data driven, research backed design decisions continue.

    Construction of Zen Sleepwear has undergone various rigorous voluntary and mandatory tests.

    Test Name Description

    Construction Safety:

    • CO2 Rebreathing
    • Suffocation Hazard
    • Seam Strength
    • Sharp Edges and Sharp Objects

    Tests conducted ensure, there is no significant risk of suffocation, weighted area construction is strong and prevents the poly-beads from accidentally escaping,velcro and zipper ends are not sharp or abrasive to cause the baby accidental harm.

    Fabric Quality:

    • Shrinkage
    • Pilling
    • Color Fastness
    • Flammability

    The highest quality fabric used in the Zen Sleepwear, can withstand multiple washes and passes flammability tests without needing to be treated with flame retardant chemicals.

    Chemical Detection:

    • Lead Detection
    • Phthalate Detection
    • Azo Dyes Detection
    • Formaldehyde Detection

    All raw materials used to construct Zen Sleepwear have been thoroughly tested to ensure that they do not contain harmful chemicals or dyes.


    The light-weight fabric we use ensures your baby will not overheat when used as instructed. The minimal filling density of the weighted parts provides the benefits without compromising your baby’s safety.


    All Zen Sleepwear can be washed frequently. To protect the quality of fabric, we recommend washing in cold water, on a gentle cycle and drying using low heat.

    The materials we use in our products are designed to withstand frequent spit-ups and the subsequent multiple washes, as well as your little one’s vigorous kicks and wiggles.The garment’s construction ensures filling stays in place through repeated washes. 


    • A swaddle must be securely tucked under infant’s body. However ensure that swaddle is not too tight by slipping an adult hand between baby and swaddle; it should feel snug but not uncomfortable.
    • Never swaddle using any product when your baby is sick, has a cough or fever in order to prevent restriction in breathing.
    • Always place baby on their back to sleep, especially when swaddled.
    • Always remove swaddle from crib when not in use.
    • Never use a swaddle with products with restraints such as car seats, strollers, swings, etc.


    • Do not use any objects such as pillows or soft toys in your infant’s sleeping environment.
    • Never place your swaddled infant on soft surfaces such as your bed, a couch, an air mattress etc. as your baby may rollover and suffocate.
    • Never sleep with your child in an adult bed, an adult can roll on top of an infant and suffocate them.
    • Place your baby to sleep in an appropriate sleep product such as a crib, cradle, or bassinet.
    • Use discretion when using any covering on your infant in warm rooms. Take care and periodically check that your baby is not overheated. Overheating may be a factor in SIDS. Do not overbundle.
    • Always provide supervision for continued safety of your child.