Emma Diamond Hybrid Mattress Review (2023 Updated)

Emma Diamond Hybrid Mattress Review (2023 Updated)

Emma Diamond Hybrid Mattress Review (2023 Updated)

Emma Diamond Hybrid Mattress Review

Did you know that we spend a third of our lives sleeping? 

Black Friday Deal up to 55% off Emma

Since we spend so much of our life sleeping it is important that we try and make the time we spend in the land of nod a comfortable and luxurious experience.

If you struggle to fall asleep or find your bed uncomfortable, then one of the best things you can do is invest in a brand-new bedding setup. Taking the time to find the right mattress can help you fall asleep faster, stay asleep longer, and improve how you feel during the day.

In this review, we will be taking a look at the Emma Diamond Hybrid Mattress and letting you know our thoughts on the mattress.

Let’s dive straight into it!

Who is Emma?

Emma was founded by Manuel Muller and Dennis Schmoltzi in 2013 after sharing a common goal of wanting to help people sleep better, and by doing so, help change their lives.

To help improve the shopping experience for customers, the two decided to bring the mattress market to the online world as back then people would typically shop for their mattresses in-person.

Fast forward to the current day and the team at Emma has expanded to over 500 team members and has reportedly sold 1.5 million mattresses in the last year to customers all around the globe.

Diamond Hybrid Mattress Overview

The Emma Diamond Hybrid Mattress is a medium-soft temperature-regulating mattress that boasts several great features, such as:

  • Graphite foam top-layer to help improve your deep sleep
  • OEKO-Tex Certification means the mattress does not contain any nasty chemicals and is safe for infants to sleep on
  • 100-night risk-free trial period to test the mattress out and see if it is suitable for you within the comfort of your own home
  • 10-years warranty to make sure the mattress stands the tests of time

Emma currently offers two different mattresses, the Emma Comfort and the Emma Diamond Hybrid, with the Diamond Hybrid being the more ‘premium’ mattress they sell.

Purchase & Delivery

The great thing about mattress-in-a-box products is that they can be purchased and delivered straight to your door in a convenient little package. If you are looking for a place to purchase the Emma Diamond Hybrid Mattress, then be sure to check out their website.

Like most other competitors in the space, Emma offers free shipping and returns on all of their mattresses. This means that if you are not completely satisfied with the product then you can have the mattress returned for a full refund of your money.

In addition to this, Emma also offers ‘same-day delivery’ for people who live in most major cities around Australia (Melbourne, Sydney, Adelaide, and Brisbane). Otherwise, If you live outside of metro areas then you can expect your mattress to arrive within 1-3 business days.

My partner and I purchased the king-size Emma Diamond Hybrid Mattress as we were in the process of moving apartments and wanted to upgrade our current mattress.

Emma Diamond Hybrid Mattress Same-Day Delivery

Additionally, we also purchased the Emma Signature Bed and the Emma Flip Topper to go along with the mattress. 

The mattress was sent over inside a tightly-packed cardboard box (45x45x110cm) that was admittedly quite heavy to lift by myself. In fact, it required a hand trolley to have it transported safely into our apartment.


Inside the cardboard box, you will find the mattress, which is wrapped tightly inside an airtight plastic covering. Emma provides a small plastic tool with the mattress that can be used to cut the plastic and remove the mattress that is enclosed inside.

Emma Diamond Hybrid Mattress Unboxing

Surprisingly, I didn’t notice any kind of odour coming from the mattress – which can be common when unboxing a brand-new mattress for the first time.

The instructions prompt you to wait a number of hours before using the mattress to make sure the mattress has had enough time to fully expand.

Overall, the unboxing process was incredibly simple and easy.


It is clear that the Emma Diamond Hybrid mattress is designed for comfort. All thanks to its multi-layer design that helps regulate your body temperature during the night.

There are a number of different layers that make up the mattress:

  1. Removable elastic mattress cover
  2. Diamond Degree® graphite foam
  3. Adaptive comfort foam
  4. Pocket springs
  5. HRX foam
Emma Diamond Hybrid Mattress Corner View

Each layer has been implemented for a specific purpose. For instance, the adaptive comfort foam is used to evenly distribute the pressure on your body so you can comfortably sleep in any sleeping position, regardless of your shape or size.

For a mattress like this, it is generally recommended to have it sit on a slatted bed frame to prevent any issues with overheating and to support air circulation of the mattress. 


Compared to other mattresses on the market, I would say that the Emma Diamond Hybrid mattress is more on the firmer side. I am predominantly a side and back sleeper and my partner sleeps mostly on her back or stomach. 

We did not find the mattress to be too firm to sleep on in any sleeping position.

Emma Diamond Hybrid Mattress Side View

Therefore, I think that the Emma Diamond Hybrid mattress is suitable for all sleeping positions. It doesn’t matter if you’re a side sleeper, back sleeper or stomach sleeper, you shouldn’t have any issues with the firmness of the mattress.

100-Night Trial Period

Emma gives you the opportunity to try out any of their mattresses in the comfort of your own home thanks to their generous ‘100-night trial period.’ If you find that the mattress is not right for you then simply have it returned for a full refund of your money.

It doesn’t get any simpler than that!

Emma Diamond Hybrid Mattress Front View

10-Year Warranty

Every Emma Diamond Hybrid mattress also comes with a 10-year warranty. This warranty covers a number of issues that may present themselves after you have been using your mattress for some time.

This includes:

  • Permanent sags or dips on the surface of the mattress
  • Cracks or hollows found on the mattress foam
  • Mattress not inflating properly after it has been removed from its plastic packaging
  • Damage to the cover as a result of improper manufacturing

For more information regarding this warranty period please go here.


The Emma Diamond Hybrid Mattress comes in a number of different sizes: single, king single, double, queen, and king. You can find the dimensions and weight of each of the mattress sizes below to make sure the mattress fits perfectly inside your room.

Mattress SizeDimensionsWeightPrice
Single188 x 92 x 25 cm20 kg (44.09 lbs)$879.45 (45% off)
King Single203 x 107 x 25 cm23 kg (50.70 lbs)$989.45 (45% off)
Double188 x 138 x 25 cm27 kg (59.52 lbs)$1,099.45 (45% off)
Queen203 x 153 x 25 cm32 kg (70.54 lbs)$1,209.45 (45% off)
King203 x 183 x 25 cm40 kg (88.18 lbs)$1,374.45 (45% off)

Frequently Asked Questions (FAQ)

How Long Do I Leave My Emma Mattress to Expand?

You will need to wait a couple of hours for your Emma mattress to expand enough for you to be able to sleep on it. In some cases, you may need to wait up to 48 hours for your mattress to expand completely and have all the bumps removed.

How Do You Unwrap an Emma Mattress?

You can unwrap your Emma Mattress using the plastic tool that comes included with your mattress. Simply slide the plastic wrapped around your mattress through the gap in the plastic tool to safely cut all the way through the plastic.

Can You Use an Electric Blanket With an Emma Mattress?

Yes, you should have no problem using an electric blanket with your Emma mattress. Just make sure the electric blanket you choose is the right size for your mattress.

How Can I Return an Emma Mattress?

Reach out to the Emma customer service team if you would like to return your Emma mattress at [email protected]. The customer service team will arrange for your mattress to be picked up at no cost within their service delivery areas.

Can an Emma Mattress Be Used on a Slatted Base?

The Emma mattresses can be used on a slatted base. In fact, the mattress can be used on any surface. You can set the mattress on top of a box spring or slatted bed base without running into any issues. In fact, you can even place the mattress on the ground if you want to.

Does the Emma Mattress Have Springs?

Yes, the Emma Diamond Hybrid mattress contains hundreds of steel springs that help with the breathability and comfort of the mattress.

Is Emma a Good Mattress?

In my opinion, the Emma Diamond Hybrid mattress is a fantastic mattress that is suitable for people of all ages and sleeping styles.

Where Can I Buy an Emma Mattress?

You can purchase an Emma mattress by placing an order online through their store at Emma Sleep.

Can You Sleep on an Emma Mattress Straight Away?

You should try and avoid sleeping on any Emma Mattress, like the Emma Comfort Mattress straight away. Instead, you should wait a few hours for the mattress to expand.

Do I Need to Rotate My Emma Mattress?

It is a good idea to rotate your Emma Diamond Hybrid mattress every so often to avoid any issues with sunbathing. Rotate your mattress once a month for the first 6 months. Afterwards, you can get away with only rotating it every 3 months.

Does an Emma Mattress Come in a Box?

Yes, the Emma Diamond Hybrid mattress comes in a box. The dimensions of the box are 38 x 38 x 110cm for the single, king-single, and double-sized mattresses. For the queen and king-sized mattresses, the dimensions of the box are 45 x 45 x 110 cm.

How Do You Clean an Emma Mattress?

You can clean your Emma Diamond Hybrid mattress by washing the top cover of the mattress at a temperature no higher than 60 °C. Additionally, you should also wash the side cover at a temperature no higher than 40° C.

For extra protection, and to help increase the longevity of your mattress, it is recommended that you use a mattress protector.


My partner and I have been sleeping on the Emma Diamond Hybrid mattress for about a month now and I can honestly say that the difference between this mattress and our previous one is night and day.

One of the biggest issues we faced with our previous mattresses was that whenever I moved or changed my sleeping position during the night it would cause my partner to wake up (she is an incredibly light sleeper!). 

On top of that, our previous mattress was much less comfortable to sleep on and some nights we would not feel completely rested after a full night’s sleep.

We do not face any of these issues with the Diamond Hybrid mattress (so far!).

Overall, if you are on the market for a premium mattress then you should definitely not overlook the Emma Diamond Hybrid mattress. 

We haven’t slept this well in years!

How We Tested

We tested the Emma Diamond Hybrid mattress over a 1-month period. During this time, we slept on the mattress every night so we could provide an accurate and honest review of the product.

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