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Cozey Foam Mattress: Layers, Firmness and Sizes

A plain guide to our Foam Mattress: what is in each of its three layers, how firm it feels, the sizes we offer in Australia, and how the trial, warranty and setup work.

Updated 9 November 20266-min ReadCozey Editorial
A Cozey foam mattress on a bed

Short answer: Our Cozey Foam Mattress is a 25.4 cm (10 inch), all-foam, medium-firm mattress with no coils. In Australia it comes in Full and Queen with a 100-night trial and a 15-year warranty.

It has a 5 cm (2 inch) memory foam comfort layer on top, 5 cm (2 inches) of transition foam in the middle and 15 cm (6 inches) of high-density foam underneath. We designed it for people who want a close, cradling feel and a bed that stays still when a partner moves. It ships rolled in one box, so it is easy to get through a stairwell or a lift. This guide stays on the Foam Mattress itself. If you are weighing foam against coils in general, our foam vs hybrid mattress guide covers the difference.

On This Page

  1. What is in each layer of the Cozey Foam Mattress?
  2. How firm is it, and who is it for?
  3. What sizes does the Foam Mattress come in?
  4. How do you set it up and look after it?
  5. What are the trial and warranty details?
  6. Our recommendation
  7. Explore our bedroom range

What is in each layer of the Cozey Foam Mattress?

The mattress has a polyester cover over three foam layers. Each layer has a job.

What is in each layer of the Cozey Foam Mattress?

Layer (top to bottom)ThicknessWhat it does
Comfort layer: memory foam5 cm (2 inches)The layer you feel first. It contours to your body and gives the close, cradling feel.
Transition layer: foam5 cm (2 inches)Firmer than the comfort layer, so you move into support gradually.
Support layer: high-density foam15 cm (6 inches)The firmest layer. It keeps your spine aligned and stops your hips from sinking too far.

Memory foam can hold warmth, which is the main reason hot sleepers may prefer our Hybrid. The cover is spot clean only, so a mattress protector is the easiest way to keep it fresh. The mattresses we sell in Australia are made in China.

How firm is it, and who is it for?

The Foam Mattress is medium-firm, which suits back and side sleepers well. Because the core is dense foam, your weight is absorbed evenly, so you settle into the bed rather than lying on top of it. There is very little bounce.

It tends to suit:

  • Side and back sleepers. The memory foam layer gives shoulders and hips room to sink, and the support foam keeps your lower back from sagging.
  • Couples. The foam core absorbs movement where it starts, so a partner getting up early is less likely to wake you.
  • People who want a low bed. At 25.4 cm (10 inches) it is the lower of our two mattresses.

It is a weaker fit in a few cases. It comes in one firmness, so it is not the right pick if you know you need a soft or very firm bed. It is rated for up to 113 kg per sleeper, and above roughly 104 to 113 kg most people get better long-term support from a thicker or firmer mattress. If you sleep hot, look at our Hybrid mattress, which has coils for airflow.

What sizes does the Foam Mattress come in?

In Australia the Foam Mattress comes in Full and Queen, both 25.4 cm (10 inches) tall. Standard fitted sheets fit.

What sizes does the Foam Mattress come in?

SizeWidth x length x heightBox weight
Full133.4 x 189.2 x 25.4 cm (52.5 x 74.5 x 10 inches)24 kg
Queen151.1 x 201.9 x 25.4 cm (59.5 x 79.5 x 10 inches)28 kg

The box is the same size for both: 111.8 x 44.5 x 44.5 cm (44 x 17.5 x 17.5 inches), with a built-in handle. Plan on two people to carry it upstairs.

Check the size before you order, because our labels are North American. Our Full is 133.4 cm wide and 189.2 cm long, so it is not the same as an Australian Double, which is commonly 138 x 188 cm. Our Queen is also slightly smaller than the common Australian Queen of 153 x 203 cm. Shipping is free on all items, and our guide to measuring stairs, lifts and doorways helps if you are planning the route into your home.

How do you set it up and look after it?

Setup takes a few minutes of work and a short wait:

1. Bring the box into the bedroom before opening it.

2. Unroll the mattress flat on your bed base.

3. Cut the plastic with the included bag cutter and slide it off.

4. Give it about 30 minutes before you sleep on it. It reaches its full shape within 24 to 48 hours.

A new-foam smell is normal for the first day or two and fades with some airflow.

For care, rotate the mattress head to foot every four to six months and do not flip it. Treat spills on the cover with a damp cloth and mild soap rather than machine washing it.

For the base, we suggest a solid platform, or a slatted base with slats at least 5 cm (2 inches) wide and gaps no wider than 7.6 cm (3 inches). Queen needs a centre support beam. Wire grid or coiled box springs are not compatible. On our Ara bed the mattress sits directly on the slats, which are about 5.7 cm (2.2 inches) apart on Queen and 6.7 cm (2.6 inches) apart on Full. Our guide on whether the Ara works with your mattress covers thickness and slat spacing, and our guide to mattresses for a low-profile or platform bed covers height.

What are the trial and warranty details?

  • 100-night trial. If it is not the right fit, we will pick it up for free. Read the return steps on the product page before you order.
  • 15-year warranty. It covers defective parts that are not related to consumer-caused damage or modifications. Using the mattress on a base that does not meet the support requirements above can put the warranty at risk.

Our recommendation

  • You want a cradling, quiet bed, or you share a bed with a restless sleeper: the Foam Mattress.
  • You sleep on your side or back and want medium-firm support: the Foam Mattress.
  • You sleep hot, change positions often or sit on the edge of the bed: look at our Hybrid mattress.
  • You need an Australian King: the Foam Mattress is not offered in that size here, so choose the Hybrid.
  • You weigh more than 113 kg or need a soft or very firm bed: this mattress is not the right fit.

Explore our bedroom range

Product specifications can change. Check the current dimensions on the product page before ordering.

Frequently Asked Questions

Our Foam Mattress is 25.4 cm (10 inches) tall and has no coils. Under a polyester cover, it has a 5 cm (2 inch) memory foam comfort layer, 5 cm (2 inches) of transition foam and 15 cm (6 inches) of high-density support foam. The comfort layer contours to your body, the transition layer eases you into support, and the support layer keeps your spine aligned. The mattresses we sell in Australia are made in China, and standard fitted sheets fit the Full and Queen sizes.


It is medium-firm, which is the feel most people prefer and which suits back and side sleepers well. The dense foam core spreads your weight evenly, so you settle into the bed instead of sitting on top of it, and the memory foam layer relieves pressure at the shoulders and hips. It comes in one firmness only, so if you already know you need a soft or very firm bed, this mattress is not the right pick for you.


It can, for some people. Memory foam is temperature-sensitive and can hold warmth, and a solid foam core breathes less than open coils, so a hot sleeper may notice the difference over a night. If you regularly wake up warm, we suggest our Hybrid instead. Its coil layer lets air move through the mattress core, and it also has a reinforced foam edge that holds when you sit on the side of the bed. The Foam Mattress is the better choice for stillness.


Yes. The Foam Mattress comes with a 100-night trial. If it is not the right fit, we will pick it up for free, and the product page explains the steps. It also has a 15-year warranty covering defective parts that are not related to consumer-caused damage or modifications. The base you use affects the warranty, so use a solid platform or a slatted base that meets the slat width and gap limits, and add a centre support beam for Queen.


No. On our Ara bed, the mattress rests directly on the slats, and we do not recommend adding a box spring. Wire grid and coiled box springs are not compatible with our mattresses. Any slatted base should have slats at least 5 cm (2 inches) wide with gaps no wider than 7.6 cm (3 inches), and a Queen needs at least one centre support beam. Ask our Customer Happiness team if you want to use an adjustable base.


In Australia we offer the Foam Mattress in Full and Queen. Our Full measures 133.4 x 189.2 cm (52.5 x 74.5 inches) and our Queen measures 151.1 x 201.9 cm (59.5 x 79.5 inches). They are not identical to the common Australian Double (138 x 188 cm) or Queen (153 x 203 cm), so measure your frame or choose it with our Ara bed. If you need an Australian King, the Foam Mattress is not offered in that size, so look at the Hybrid.


The Foam Mattress is rated for up to 113 kg per sleeper. Above roughly 104 to 113 kg, most people get better long-term support from a thicker or firmer mattress, and we would rather you buy the right bed than return ours. The cover is spot clean only, so treat spills with a damp cloth and mild soap and consider a mattress protector. Rotate the mattress every four to six months, and do not flip it.

Explore Cozey's Ara Bed

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