FX (Fetal Flex) Swaddle - Grey / Standard Weight

The FX (Fetal Flex) Swaddle is the only swaddle that emulates the natural essence of the womb environment by swaddling your baby in the naturally preferred Arms-Free (Fetal Flex) position, while still suppressing the Startle (Moro) reflex.

Similar to the womb environment, the FX Swaddle provides your baby optimum comfort and feeling of security, promotes better development and self-soothing, while minimising spontaneous awakenings – helping your baby sleep better and longer, and makes transitioning out of the swaddle easier!

Additionally, with the built-in 3-in-1 arm positions (Arms-in, Arms-free, and Hands-out), the FX Swaddle provides a gentler way to transition your baby from ‘womb to world’, and from 'swaddle to sleeping bag'.

>Scroll down for features , sizing, dressing, & safety info.
>Read our reviews here
>We ship AU wide and Internationally! More info here

Availability: In stock

Product Option Price Qty
Standard Weight / Tiny/Preemie (2-3.3kg, 44-50cm)
Standard Weight / 0-1m (3.3-4.8kg, 50-56cm)
Standard Weight / 1-3m (4.8-6.5kg, 56-62cm)
Standard Weight / 3-6m (6.5-8kg, 62-68cm)
Standard Weight / 6-9m (8-9.3kg, 68-74cm)
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Features & Benefits

  • Swaddles your baby in the naturally soothing fetal position – which provides optimum comfort and reassurance, reduces overstimulation, making your baby feel calm, cosy and safe.
  • Patent pending design emulates the natural essence of the womb environment by swaddling your baby in the naturally preferred ‘arms free’ (fetal-arm) position, while still suppressing the Startle (Moro) reflex.
  • Arms free (fetal-arm) position + suppressing startle reflex = better development, more self-soothing and less spontaneous awakenings = more sleep for baby and easier transition out of swaddle = more sleep for mum and dad.
  • Patent pending built-in 3-in-1 arm positions (Arms-in, Arms-free, or Hands-free), provides a gentler way to transition your baby from 'womb to world', and from 'swaddle to sleeping bag'.
  • The narrowed/tapered waistline design provides gentle pressure on baby’s belly, which can help ease colic and eliminate gas related issues.
  • Hip-healthy bell shaped design allows baby’s hips and legs to flex and move naturally, which helps the hips develop normally.
  • The design of the FX swaddle and the stretch organic cotton fabric allows proper chest wall expansion, allowing baby to breathe freely and minimising the risks associated with tight chest wrapping.
  • Made with stretchy but snug 95% certified organic cotton 5% spandex for optimum breathability and comfort.
  • Single layer of 0.5 Tog breathable organic cotton fabric to reduce the risk of overheating.
  • Australian safety standard approved. The FX Swaddle conforms to the Australian safety standard AS/NZS 1249:2014
  • Escape proof zip-up design prevents baby escaping from the swaddle. Safer alternative to velcro or traditional swaddles which can unravel and cover your child’s face.
  • Two-way zipper for easy nappy changes.
  • Super easy to use, simply place baby in the swaddle and zip up. No wrapping required!
  • Easy cleaning/care.

Sizing Guide

It is important to get the correct size for the swaddle to work effectively and for safety of your little one. Use the sizing info below to work out the correct size for your baby. Please don’t hesitate to contact us if you need any help.

Approx Age
























- All measurement are approximate and are for guidance only as all babies are different.

How many swaddles do I need?

We recommend purchasing at least two FX swaddles per size. Consider getting an extra spare for added convenience, as babies can be messy with leaking nappies and spitting up milk.

One to wash, one to wear, and one to spare!

Dressing Guide

Standard Weight FX swaddle is made from a single layer of 0.5 Tog (approx) breathable organic cotton fabric to reduce the risk of overheating. It is suitable for all year round use. Dress baby underneath the swaddle as appropriate for the nursery temperature:

  • In cooler temperatures, dress baby in warmer layers underneath the swaddle as appropriate.
  • In warmer temperatures, dress baby in lighter layers underneath the swaddle as appropriate.
  • During summer, it may be sufficient to dress baby in just the swaddle and nappy.

Please note, all babies are all different; additionally, other factors such as humidity in your region, whether there is heating in the house, and your baby's health (whether your baby has a cold or infection or another special need)  can determine how you should dress your baby.

Dress your baby to be comfortable, neither too hot nor too cold. Feel your baby's chest regularly to check his/her temperature. Don’t worry if baby’s hands, face, and feet feel cool - this is normal. If your baby is sweating or has a red face, remove some clothing and. This may be necessary if your baby is unwell, in which case you should seek medical attention.

- This dressing guide is for general guidance only as all babies are different.

Safe Swaddling Tips

  • Always sleep baby on the back, not on the tummy or side.
  • Do not use swaddle if head can pass through the neck-hole or if neck-hole is too tight.
  • As soon as a baby shows signs of beginning to roll, discontinue swaddling and use a safe infant sleeping bag instead, like our 4-in-1 365 Sleep Bag.
  • Always follow safe sleep recommendations from Red Nose Australia.

Fire hazard labelling as per AS/NZS 1249:2014


Payment methods available

We accept Visa, MasterCard, PayPal, and Afterpay payments.

Secure Payment Methods

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Shipping cost and delivery timeframe

Australia wide shipping: The more you buy, the less the shipping cost! Delivery within Australia generally takes 2-6 business days for Standard shipping, and 1-3 business days for Express shipping.

New Zealand shipping: AU$9.95 Flat-Rate. New Zealand delivery generally takes 5-10 working days.

All other countries: Shipping rates are weight based and calculated automatically. Delivery generally takes 7-14 working days.

More info at https://sleepycompany.com/shipping-returns-warranty/

Returns and exchanges policy

If you are not 100% satisfied with your purchase for any reason, or if you would like to exchange for another size, print, or product, you have 100 days (from the date of delivery) to return it. Returns must be unworn, in the state you received them, and in the original packaging. More details at https://sleepycompany.com/shipping-returns-warranty/

Product reviews

Read the FX Swaddle reviews here