Hypnia Supreme Memory Mattress Review (2024)

The Hypnia Supreme Memory Mattress is a 25 cm (9.8 inches) foam mattress.

The four mattress layers are:

• A breathable and hypoallergenic Air-wave® cover
• Graphite-infused open-cell foam with cooling capabilities
• Premium memory foam
• Polyurethane base foam

Let’s explore each of these layers further. 👇

1. Hypnia Supreme Memory Mattress Air-wave® cover

The Hypnia Supreme Memory Mattress has a breathable and hypoallergenic cover.

It has a non-slip material on the bottom to help it stay put on your bed base.

The cover also has a zip, so you can remove and machine wash it at 30°C. 🫧

However, our Sleep Hero testers found the cover was quite difficult to remove and put back on because the zip is on the underside of the mattress.

They had to lift and hold the mattress up to remove the cover.

2. 3 cm (1.1 inches) of open-cell graphite-infused foam

The top layer is an open-cell foam infused with graphic particles.

Graphite ^[1] is known to have high thermal conductivity, so it draws heat away from your body and keeps you cool at night. 🧊

Open cell foam ^[2] also has small gaps, which allow air to flow inside the mattress, keeping it fresh and dry.

When combined, these two materials create a breathable foam that sits on the top layer of the Hypnia Supreme Memory Mattress.

3. 5 cm (1.9 inches) of premium memory foam

The Hypnia Supreme Memory Mattress has a layer of high-density memory foam.

Memory foam adjusts to your body shape as you move, so you are supported throughout the whole night.

4. 17 cm (6.6 inches) of polyurethane base foam

The memory foam and graphite-infused foam layers sit on top of a durable polyurethane foam base.

Polyurethane foam ^[3] is known for its durability, making it the perfect solid base for the other foam layers in the Hypnia Supreme Memory Mattress.

It provides a pronounced rebound so the mattress doesn’t sag and returns to its original shape after each use.

As you can see here, the green base foam does not slump as much as the top two layers, making a firmer base for the mattress. 🧱

While this base is called ‘multi-zoned foam’ on the Hypnia website, their team confirmed that it does not have different zones.

It is designed to keep the other layers in good condition and support all body types.

If you are looking for a mattress with support zones for different areas of your body, we recommend the Simba Hybrid Essential.

The Hypnia Supreme Memory Mattress is very comfortable for front and back sleepers, which is unusual for a softer mattress.

Generally, a softer mattress is not recommended for stomach or back sleepers as you can sink too much, causing your spine to be misaligned.

Our tester found this mattress had a floating feeling with very little resistance against the body. ☁️

This is quite unusual for a memory foam mattress as it typically feels like you’re sinking into the mattress as the memory foam moulds and contours your body.

However, this memory foam layer is enveloped in a polyurethane foam base and an open-cell foam layer, which provide a firmer mattress surface.

This creates the feeling of sleeping on the mattress instead of in it like a traditional memory foam mattress.

The Hypnia Supreme Memory Mattress isn’t suitable for everyone.

Here are a few people we don’t recommend it for.

Older people

The Hypnia Supreme Memory Mattress may be too soft for older individuals.

Typically, seniors are recommended to sleep on a medium-firm mattress with better support.

A hybrid mattress, like the Nectar Premier Hybrid, combines pocket springs, memory foam and other types of foam to create a supportive mattress for older people.

As we discussed above, our testers also found the Hypnia Supreme Memory Mattress sagged when they sat on the edges.

This could make it quite difficult for an older individual to get out of bed or sit on the edge of their bed to put their shoes on.

The Hypnia Supreme Memory Mattress also doesn’t have handles, making it very difficult to rotate every 3 to 6 months, especially for older individuals.

You may need a few people to help rotate the mattress.

Heavier people

We don’t recommend the Hypnia Supreme Memory Mattress for heavier people.

This mattress is quite soft, and heavier individuals could sink too much into the mattress, causing their spine to become misaligned.

For example, if you have wider and heavier hips, you may find they sink further than your shoulders.

This can lead to your spine misaligning when lying on your side.

Larger people should opt for medium-firm mattresses over 27 cm (10.6 inches).

A firmer mattress will provide a little more resistance so you don’t sink too much into the mattress, and your spine stays aligned no matter the sleeping position.

Hot sleepers

The Hypnia Supreme Memory Mattress has a memory foam layer, which is known to sleep hotter than other mattress materials.

Our Sleep Hero tester found this mattress was very warm to sleep on, even with a light duvet. 🔥

That said, the top layer of open-cell welcome foam promotes good air circulation and allows heat and humidity to be quickly evacuated.

This breathability doesn’t compare with pocket springs or natural latex mattresses, but it does help to keep the mattress dry so bacteria don’t fester.

In order to give you the most accurate results, we measured the temperature of the Hypnia Supreme Memory Mattress while our tester was on the mattress and after she got up.

Nonetheless, if you’re experiencing menopause or suffering from night sweats, we don’t recommend memory foam mattresses like the Hypnia Supreme Memory Mattress.

Instead, we recommend a pocket spring mattress like the Emma Luxe Cooling mattress.

Allergy sufferers

We don’t recommend the Hypnia Supreme Memory Mattress for allergy sufferers because the cover is difficult to remove and clean.

While the mattress cover is fully removable, our testers found it very tedious to remove, which could be quite annoying for people who need to wash their covers regularly.

Washing your mattress cover helps to remove any dust and bacteria that has built up over time.

These particles can trigger allergies and cause you to sneeze throughout the night.

People who like a firmer mattress

Ultimately, the Hypnia Supreme Memory Mattress is a soft mattress.

If you prefer a firm mattress, you will not like this product and should consider these mattresses instead:

Hypnia offers free UK delivery on their mattresses. 🚘

The mattress is delivered vacuum-packed in a box with handles, making it easy to carry up the stairs and into your bedroom.

Our tester found the box was heavy, but they could carry it alone.

The standard delivery delivers the box to the ground floor of your house, while the premium delivery delivers to the room of your choice and collects your old mattress.

The mattress is folded in half inside the box and wrapped in a plastic cover.

Our tester found it difficult to unbox the mattress as they had to unfold it and flip it to the correct side.

Our tester found it took a few minutes for the foams to open and more than 24 hours to decompress fully.

This is quite a long time for a bed-in-a-box mattress, as the decompression process usually only takes up to 12 hours.

They also said it had a strong off-gassing smell that dissipated after 24 hours, which is fairly standard for a bed-in-the-box mattress.

The Hypnia Supreme Memory Mattress is made from three different foam layers, creating a soft feel.

We recommend this mattress for restless sleepers, couples and those who prefer a softer mattress.

While the Hypnia Supreme Memory comes at a higher cost, we think it is great value for money.

The 200-night trial period and 15-year guarantee allow you to test the mattress, decide if it’s right for you and protect your investment for years to come.

Just remember to look out for discounts on this mattress as you could save a large amount of money.