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Mattress Fixi

12 EUR 25 EUR Save 52%

A comfortable supporter for your baby in the cradle or baby hammock to provide them with the peaceful and restorative sleep they deserve, for safe sleep, no matter how active your little one is.

  • Easy-to-use and adjust
  • GOTS certified - produced with care
  • Provides a secure hold and safe sleep
Size: For Hammock

Delivery in 2-5 business days

It’s completely normal to have a baby who is an active sleeper, but sometimes wriggling around can disrupt their slumber and interfere with their sleeping patterns.

With our luxuriously soft and quilted Mattress Fixi support belt, you can help your baby stay more still when sleeping and give them a more replenishing rest.

Made for our cradle, baby hammock, and twin baby hammock, the Mattress Fixi is designed with two different belts: a woven cotton belt to go around the mattress at the bottom and a quilted organic cotton belt that is gently straps fastened around your baby’s tummy with Velcro at the top.

Designed and developed by sleep experts in Denmark, this belt is made with 100% organic GOTS-certified cotton and will give you peace of mind, knowing that your baby is dreaming without interruptions.


Two sizes (cradle and baby hammock).
Suitable for children aged 0-6 months

Mattress belt (baby hammock): 100cm x 26cm
Mattress belt (cradle): 110cm x 26cm
Soft, quilted child belt: 64cm x 16cm

Mattress belt: GOTS-certified, 100% organic woven cotton
Child belt: GOTS-certified, 100% organic quilted cotton with 100% organic cotton filling
Velcro fastening: 100% polyester
Product is supplied a small, recycled polyester bag

The mattress fixi is prewashed and is therefore ready for use when you receive it. It is possible to machine wash it at 40ºC. Ensure the velcro fastening is closed and wash in a separate washing bag.
Do not bleach or use detergents with bleach.
When drying, ensure the stretch fabric is back to its original shape. Mattress Fixi can be ironed on full steam setting while damp.
Do not tumble dry.

How to use
The Moonboon Mattress Fixi consists of a belt for the mattress and a belt for the child, which are attached together. The bottom belt is made from firm, woven cotton and is designed to be strapped around the Cradle mattress and wooden base or the Baby Hammock's mattress for a secure hold.
The upper belt is soft and quilted featuring a Velcro fastening and the Moonboon logo. This can be gently tightened around the baby’s tummy while they are lying on their back. You can easily adjust this top belt at any time.
When positioning the Mattress Fixi using the bottom belt, ensure it is pulled down over both the wooden base and the Kapok Mattress on the Cradle, or down over the Kapok Mattress on the Baby Hammock or Twin Baby Hammock. Ensure that the upper, quilted belt is positioned in the centre of the cradle before placing your baby on top of this open belt and fastening it around the tummy.

Shipping is free to parcel shops on all orders above 150 EUR. For orders below 150 EUR, see the list of shipping rates here.

All orders are prepared with great care and shipped within 2-5 business days - please note that in periods of high order volume, delays may occur.

You have the right to return your order within 14 days of having received it. Returns are administered through our return portal. A small fee will be deducted for shipping when you use the portal for your return.

Import duties and/or taxes may arise when ordering from outside the European Union, Norway or Switzerland.


Safety above all else. Our products are developed and tested extensively by sleep experts in Denmark, giving you peace of mind that your baby is sleeping safe and sound.


Only the best is good enough for your baby, so we use organic materials for our products wherever possible. This product is made using certified organic cotton.


Rooted in our Scandinavian heritage, we strive to deliver a minimalistic design that follows function and cares for the environment simultaneously.

If it's not safe, we don't sell it

Choose Safety

You never compromise on your baby’s safety, and we don’t either! Therefore we have created an overview of important things to keep in mind when shopping baby sleep products, so that you and your baby can sleep soundly.