Thick mattress toppers

Best Thick Mattress Toppers UK (2022)

Written by Holly

Last updated: 19.07.2022

11 Min.

The average mattress topper is anywhere between 2 - 5cm in height. 📏

Yet, did you know you can get extra thick mattress toppers as much as 10 cm?

A thick mattress topper can level up your sleeping experience by moulding around the pressure points and adding a premium deep comfort layer. 🥰

But do you need one?

Let’s find out in our thick mattress topper review. 👇

Man and woman sitting on mattress topper

Why buy a thick mattress topper?

😍 Extra support for the spine

☁️ Moulds around pressure points

✨ Breathes new life into your mattress

Our top UK thick mattress topper recommendations:

Amazon Acrali Home Mattress Topper

The Acrali Home mattress topper is extra thick and filled with 100% soft microfibre.

This 4 inch (10cm) thick quilted topper adds an extra level of comfort to your sleep. 

The Acrali Home mattress topper is one of the thickest toppers available online. 

acrali thick mattress topper

Made with super soft premium quality hollowfibre, the Acrali Home mattress topper moulds around the body. 

This thick mattress topper has a baffle box stitched design to ensure all the filling stays in place. 

The Acrali Home mattress topper is 100% machine washable and tumble-dry friendly. 

The thick mattress topper comes with elasticated straps that grip onto the corner of the mattress to keep it in place.

The Acrali Home mattress topper includes free returns. 


  Acrali Home mattress topper
Materials: Microfibre
Depth: 10 cm (4 inches)
Trial period: /
Guarantee: /
Available sizes: Standard single, small double, double, king, super king
Our Favourite

Simba Mattress Topper

The Simba mattress topper is a high-quality hybrid topper with mini pocket springs, synthetic latex, and high-resilience foam.

All foams used in this topper are CertiPUR-certified, ensuring they're free from toxins, heavy metals, dyes, and harmful chemicals.

The Simba Hybrid mattress topper is one of the most unique toppers on the market.

Proudly designed by the British Simba Sleep, the Simba topper features three layers:

  • Simba-Pure synthetic latex (2.5 cm / 1 inch)
  • 2,500 Aerocoil 20 mm mini pocket springs, enclosed in 100% polyester pockets
  • High-resilience Simba-Pure base foam (2 cm / 0.7 inches)

The Simba-Pure foam is CertiPUR-certified and guaranteed to be free from TCPP, phosphates, parabens, biocides and persistent organic pollutants. 🌱

Simba mattress topper
It looks all-foam from the outside, but the Simba topper has pocket springs at its core

This is a cooling mattress topper as the springs allow for maximum airflow. 

The cover with 3D mesh fabric is also ultra-breathable, further enhancing airflow.

This helps with temperature regulation, ensuring you stay cool and fresh all night long. ❄️

Because of its hybrid composition, the Simba topper also feels much firmer than pure foam toppers. 

This is great if you just want to add a touch of firmness. 🧱

The Simba topper has an anti-slip base and elasticated straps to keep it firmly in place on your mattress.

The Simba mattress topper comes with free delivery & returns, a 14-day returns policy, and a 1-year guarantee. 

-35% SIMBA TOPPER£ 148.85

  Simba Hybrid Mattress Topper
Materials: Synthetic latex, mini pocket springs, Simba-Pure foam
Depth: 7 cm (2.7 inches)
Trial period: 14-day returns policy (you can try out the topper in these 14 days but this is subject to change)
Guarantee: 1 year
Available sizes: Single, small double, double, king, super king

Tempur Mattress topper

The Tempur mattress topper is a premium memory foam topper by the esteemed Tempur brand.

This luxurious topper has been designed to mould to the shape of your body, offering the ultimate orthopaedic support.

The Tempur memory foam mattress topper has been designed by the esteemed Tempur brand, using NASA-certified memory foam.

Memory foam adapts perfectly to your body shape, offering sufficient pressure relief and supporting your spine.

The foam retains more heat than other types of foam and will create a warm and cosy sleeping environment.

Tempur mattress topper

The dual-sided Tempur Topper 7 comes with a removable soft jersey cover that's machine-washable at 60°C.

This is great for people with hygiene concerns or allergy sufferers. 🤧

The Tempur memory foam topper is quite heavy, coming in at 9.8 kg (21.6 lbs) for the smallest size.

Delivery is free and usually takes place within 2 to 4 weeks. 🚛

The Tempur mattress topper is significantly more expensive than other toppers on the market. 

It is a good option if you don't have budgetary constraints, but the other toppers we recommend also offer excellent quality at much better prices.


  Tempur Topper 7
Materials: Memory foam
Depth: 7 cm (2.7 inches)
Trial period: 100 days
Guarantee: 10 years
Available sizes:  Standard small single, single, double, king size, super king

The Fine Bedding Company Dual Layer Mattress Topper

This Dual Layer Mattress Topper is made of 100% polyester and features an easy-to-use zip construction.

The Dual Layer Mattress Topper is a 5-star hotel choice for those that like to sleep in luxury. 

The Fine Bedding Dual Layer Mattress Topper is a luxurious choice for an enhanced feeling of comfort. 

dual layer topper on bed

Made of 100% Smartfil® Microfibre, this topper provides a comfortable and breathable sleep. 💨

The dual layer construction includes a zip to remove the top layer for an easy wash up to 60°C. 

Fitted with 35 cm (13.7 inches) elastic straps, this topper will fit onto any type of mattress.

Unfortunately, this mattress topper does not include a sleep trial or warranty period. 


  Dual Layer Mattress Topper
Materials: 100% Super Soft Microfibre cover & 100% Smartfil® Microfibre filling
Depth: Not specified
Trial period: 14-day returns policy only
Guarantee: N/A
Available sizes: Single, double, king, super king

IKEA Tussöy

The IKEA Tussöy is a memory foam mattress topper with a washable cover.

The IKEA Tussöy is the only IKEA mattress topper available on Amazon in the UK - albeit only in European sizes.

The IKEA Tussöy is one of IKEA’s most popular mattress toppers.

IKEA Tussöy mattress topper

Made of polyurethane memory foam with a density of 50 kg / cu.m, this mattress pad has been designed to mould to your body, enabling pressure relief and allowing your muscles to relax. 🤗

Stretch fabric on the topside creates a soft sleeping surface.

Memory foam is very responsive to temperature. It will be firmer in lower temperatures and softer in higher temperatures. 

The polyester cover is removable and can be machine-washed at 60 ℃. 🧽

Like the other IKEA mattress toppers, the IKEA Tussöy is roll-packed for easy transportation. 

The IKEA Tussöy is also available via Amazon in the UK, though you'll only be able to purchase the European imports at a higher price.  

  IKEA Tussöy
Material: Memory foam
Thickness: 8 cm (3.2 inches)
Available sizes: 90 x 200 cm, 140 x 200 cm, 160 x 200 cm, standard single, standard double, standard king, standard super king
Our favourite alternative: Try the high-quality Panda memory foam topper instead.

What is a mattress topper?

A mattress topper sits on top of your mattress.

They are designed to improve the feeling of your mattress by adding an extra layer of comfort. ☁️

Mattress topper making firm mattress soft
A thick mattress topper adds a soft layer to a firm mattress.

If your mattress lacks support or feels too firm, a mattress topper can help to enhance the overall feel. 💞

Thick mattress toppers come in various materials, including microfibre, wool, duck feather, and memory foam.

But what kind of thickness should you desire? 👇

How thick should a mattress topper be?

Mattress toppers are available in a range of thicknesses. 🙌

Most mattress toppers start around a standard depth of 5 cm (2 inches).

An extra thick mattress topper can measure 7 - 10 cm (3 - 4 inches).

What is the thickest mattress topper?

The thickest mattress topper is around 10 cm (4inches) in depth.

Mattress topper thickness
Mattress toppers are between 4 - 10 cm deep.

A 10cm thick mattress topper can provide even more comfort than a standard mattress topper.

The additional depth moulds around your hips and shoulders and relieves pressure from these areas.

An extra thick mattress topper can even make a firm mattress feel softer. 😍

The Acrali Home mattress topper made with soft microfibre is one of the thickest toppers available.

Do you need a thick mattress topper?

So, what kind of person needs a thick mattress topper - and is that person you?

Many people could benefit from a thick mattress topper, but it depends on your weight, sleeping position and firmness preference.

Side sleepers

Thick mattress toppers are a perfect choice for side sleepers. ✔️

Optimal spinal alignment graphic
A thick mattress topper encourages spinal support in the side position.

This is because side sleepers need a mattress that moulds around the hips and shoulders when sleeping in the side position.

The mattress topper will contour to the body's shape and relieve pressure in the joints.

Side sleepers generally need a softer mattress in comparison to the other sleeping positions. 🤯

And a thick mattress topper can help achieve a softer firmness level.

Lighter people

Lighter weight people may really benefit from a thick mattress topper. 👌

Mattress firmness graphic
A thick mattress topper encourages a neutral spine for lightweight sleepers.

Often, even medium-feel mattresses can feel too firm for those who are lighter. 🧱

The less you weigh, the more sensitive you will be to a firm mattress, which misaligns the spine and puts pressure on the joints.

A thick mattress topper can cushion those areas whilst encouraging better spinal support.

Those with joint pain

Some people suffer from aches and pains in the hips, pelvic region, elbows, and shoulders.

Many try to counteract this pain with a body pillow, which can relieve some discomfort. 🤗

Pregnant woman with body pillow
A body pillow can relieve some pressure of a firm mattress.

A firm mattress pushes against these areas and can have you waking up in agony. 🙁

However, a thick mattress topper will cushion around sensitive joints and provide a more weightless feeling of sleep.

Those who are elderly, pregnant or suffer from chronic pain could benefit from an extra thick mattress topper.

Who isn’t a thick mattress topper suitable for?

However, a thick mattress topper (or any mattress topper) isn’t always suitable. 👎

Woman confused
A thick mattress topper isn’t suitable for everyone.

Some people may find that a mattress topper makes their bed feel too soft.

If you are on the heavier side, you may experience too much sinking into a mattress topper.

Likewise, stomach sleepers need a firm mattress that lifts their back and helps to keep the spine straight. 📏

Stomach sleeper graphic
Stomach sleepers require firmer support.

A thick mattress topper could encourage a bend in the spine in this position and create back pain.

If you’re trying to make a soft mattress feel firmer, then a mattress topper isn’t the way to go.

Whilst there are firm mattress toppers available, generally, a thick mattress topper will create a softer feel.

Instead, consider purchasing an extra firm mattress. 👇

The DreamCloud Luxury Hybrid is made with firm memory foam and ActivEdge springs for optimal support across the entire surface of the mattress.

When is it time to buy a new mattress?

It’s important to remember no matter how thick the mattress topper is, there is only so much that it can do.

An extra thick mattress topper can help relieve pressure and provide additional comfort.

However, if your mattress is old and dipping, it’s time to throw in the towel. 🙅

Mattress needs replacing graphic
A mattress over 7 years may need to be replaced.

A mattress topper isn’t going to be a cure for indents or mattresses that provide no support.

Instead, consider replacing the mattress altogether.

Buying a mattress doesn’t have to be stressful, and most now come with sleep trials and extended warranties to keep you protected. 🤞

Take a look at our favourite mattresses in the UK below:

Thick mattress topper materials

Mattress toppers come in a variety of materials that have different benefits. 🧽

This includes:

  • Memory foam mattress toppers
  • Goose feather and down mattress toppers
  • Gel memory foam mattress toppers

You should consider your individual needs when choosing the materials.

For example, memory foam mattress toppers are hypoallergenic, making them a great anti-allergy choice.

However, they also tend to be much warmer than regular mattress toppers. 🌡️

Temperature regulation scale
Mattress topper materials retain heat differently.

Natural mattress toppers with a cotton cover are more breathable.

Yet, they can be expensive, particularly if they have a high thread count. 🧵

Can you wash a thick mattress topper?

Some thick mattress toppers are machine-washable or include washable covers. 🧼

Mattress topper washable cover
Some mattress topper covers can be washed.

This is great for those with allergies that need to keep on top of removing bacteria and dust mites. 🦠

Simply pop your mattress topper into the washing machine with your laundry detergent on the recommended setting.

You should check the product label to see if the mattress topper you buy is washable or has a washable cover.

Can I wash a thick memory foam mattress topper?

Thick memory foam toppers are not washable. ❌

do not wash graphic
Memory foam material cannot be washed.

That’s because memory foam is damaged if water touches the material.

We recommend using a waterproof mattress protector over your mattress topper.

This will keep the material fully protected and prevent you from damaging the topper and losing your warranty. ☔

Thick mattress topper sizes

A thick mattress topper comes in standard UK sizes.

mattress topper sizes uk
Mattress toppers come in the same sizes as mattresses.

This includes:

  • Thick mattress topper single: 90 x 190 cm (3’ x 6’3”)
  • Thick mattress topper small double: 120 x 190 cm (4' x 6'3")
  • Thick mattress topper double: 135 x 190 cm (4’6” x 6’3”)
  • Thick mattress topper king size: 150 x 200 cm (5’ x 6’6”)
  • Thick mattress topper super king size: 180 x 200 cm (6’ x 6’6”)

Mattress toppers also come in a range of depths. ✅

For an extra thick mattress topper, look for one that measures over the standard 5cm (2 inches).

Thick mattress topper prices

Mattress topper prices vary from budget-friendly to high-end. 💰

Man sitting on coins graphic
Many thick mattress toppers are affordable.

IKEA and Amazon mattress toppers are on the cheaper end of the scale but can lack in quality and how long they will last. 😟

Cheaper mattress toppers also don’t tend to include sleep trials or warranties that can protect you from wasting your money.

Luxury mattress toppers such as the Tempur topper include the best materials but can cost as much as a brand new mattress.


Mid-range mattress toppers such as the Simba mattress topper have a good balance of quality and budget. ⚖️

We recommend investing in a good quality product that is within your means.

Thick mattress topper discount codes

Is a thick mattress topper out of your price range? 🤔

Budget mattress graphic
You can find fantastic discounts on thick mattress toppers.

We’ve got the best thick mattress topper voucher codes to help you stick to your budget.

Just bookmark our discounts page for all the best mattress topper deals.

You can also sign up for our newsletter for exclusive discount codes. 🏷️

Thick mattress topper alternatives

Torn between a thick mattress topper and a regular mattress topper?

Bigger isn’t always better, so it’s essential to do your research before narrowing your options.

Our article on the best mattress toppers will go into more detail about choosing a mattress topper and the best available in the UK. 🔍

You can also take a look at our favourites below:

Is a thicker mattress topper better?

The type of mattress topper you need depends on you as an individual.

A thick mattress topper is an excellent choice for side sleepers, those with joint pain, or lighter weight sleepers who will experience a good night’s sleep on a thick topper.

But they’re not for everyone. 😲

For many, a regular mattress topper, or a brand new mattress might be more appropriate.`

Take a look at our UK favourites:

Frequently asked questions:

  • How to attach a mattress topper

    Most mattress toppers come with 4 corner straps.

    To attach your mattress topper, wrap the elasticated corners around each mattress corner.

    Ensure you secure your mattress topper before placing on your mattress protector, sheets, and duvet.

    Most mattress topper straps are stretchy enough to fit deep mattresses.

  • Are thick mattress toppers bad for your back?

    Some may be concerned that a thick mattress is bad for the back as it is often recommended that a firm mattress is better.

    However, this depends on your sleeping position, weight, and sensitivity to pressure.

    Side sleepers and back sleepers could feel more comfortable on a thick mattress topper as it should mould around the body without creating a dip in the spine.

    Yet, stomach sleepers may wake up with back pain as they need a firm mattress that keeps the spine and neck aligned.

    Lighter weight sleepers will feel more comfortable on a mattress topper, but heavier weight sleepers may feel less comfortable.

    This is because heavier sleepers will sink into the mattress topper more easily, creating a hammock effect on the spine.

    You should fold your duvet in half and lay on your mattress in your regular position for 10 minutes and see how this affects your overall comfort.

  • Where can I buy a thick mattress topper?

    Mattress toppers are available online and in many brick-and-mortar stores that sell bedding products.

    This includes:

    • Thick mattress topper Argos
    • Thick mattress topper Wilko
    • Thick mattress topper Dunelm
    • Thick mattress topper Dreams
    • Thick mattress topper Bensons for Beds
    • Thick mattress topper John Lewis
    • Thick mattress topper Amazon

    There are also lots of popular UK brands that stock thick mattress toppers.

    Take a look at our article on the best mattress topper brands.


After years of working in a leading UK bed store, I'm passionate about helping others find their perfect mattress. I love to write about sleep almost as much as I love to nap!

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