UNDERLIG Foam mattress for junior bed, white,
How to get it
Your child needs a cozy place to sleep which is just the right size in order to feel safe. UNDERLIG junior mattress fits perfectly in our junior beds and gives your child a cozy sleep in their first “big bed”.
Article Number103.504.08Product details
The outer cover is easy to remove and is machine washable at 140°F (Hot).
Your child can choose the comfort they prefer since the polyurethane foam has two different surfaces. The egg-shaped pattern has a medium-firm comfort, and the smooth side has a firmer comfort.
A fixed inner cover increases the fire safety of the mattress and makes it easy to put the outer cover back on after washing. It also prevents children from putting mattress contents in their mouth.
The zipper of this mattress has a little pocket where you can hide the pull tab from the hands of curious children.
Roll-packed - easy to take home.
Synnöve Mork
Wash the cover inside out with the zipper closed.
- MaterialCare
- Ticking:
- 62 % cotton, 38 %polyester
- Quilt filling/ Filling:
- 70 % viscose, 30 % polyester
- Inner fabric:
- 100 % polypropylene
- Comfort filling:
- Polyurethane foam 1.7 lb/cu.ft.
- Ticking:
- 62 % cotton, 38 % polyester
Non-removable coverDo not wash.
Do not bleach.
Do not tumble dry.
Do not iron.
Do not dry clean.
Wipe clean with a damp cloth.
Removable coverMachine wash warm (max 140°F/60°C) normal cycle.
Do not bleach.
Do not tumble dry.
Iron medium temperature, max 300°F/150°C.
Do not dry clean.
Measurements
Length: 63 "
Width: 27 1/2 "
Thickness: 3 7/8 "
- UNDERLIGArticle Number103.504.08
Length: 29 ¼ "
Weight: 9 lb 15 oz
Diameter: 9 ½ "
Package(s): 1
Reviews

Our take on cotton
We use cotton in many of our products, from sofas and cushions to bed linen and mattresses. It is a soft, durable, and renewable fiber that breathes and is good at absorbing moisture. All these great qualities make cotton one of our most important materials, but it isn’t without its challenges, much having to do with conventional farming methods that negatively impact the environment and poor working conditions for farmers. With our size and production volumes, we want to drive change in the cotton industry.
Working together to drive change
Each year, IKEA uses around 0.5 percent of all cotton grown around the world. This may not seem like a lot, but the number is big enough to drive change in the industry. For many years, we have been working with partners and stakeholders globally to transform conventional large-scale cotton farming and set social and environmental standards for cotton production. As an example, we helped set up the Better Cotton Initiative (BCI) who runs the world’s largest cotton sustainability programme. BCI exists to make global cotton production better for the people who produce it, better for the environment it grows in and better for the sector’s future. Today, more than 110,000 farmers have adopted more sustainable farming practices within IKEA projects.
Ensuring compliance throughout the value chain
All IKEA products are produced in accordance with the IKEA IWAY Standard, our Supplier Code of Conduct. It sets out the minimum environmental and social standards expected from our suppliers, including compliance with local laws. We do not accept any form of forced labor, child labor or treatments in breach of our supply chain requirements. Our cotton teams across the globe ensure that all cotton used in IKEA products meets the demands of compliance in our supply chain. By having teams on the ground in areas where it has previously been challenging to work responsibly, we can challenge the traditional ways of working and improve the industry. If we discover that we are acting in places where we cannot ensure our requirements are being met, we follow-up on the ground and drive change.
Material
What is foam?
Foam is excellent as upholstery in seating and mattresses since it provides good comfort and can relieve pressure by moulding to the body. Depending on the properties and feel you’re looking for, there are several qualities to choose from, like high-resilience foam and memory foam. The raw material for foam was previously based entirely on virgin fossil materials. But today, together with our suppliers, we’ve begun developing a material that is renewable and recycled.
Quality
Soft and pleasant with good support
This 4" thick mattress has two different surfaces ‒ one egg-shaped side with medium-firm comfort and one smooth side which is firmer. The texture of the foam makes the mattress soft and well-ventilated, which provides good support and a comfortable sleeping environment for your child. The outer cover can be removed and machine washed at 140°F (Hot).