Simba Mattress Topper

Simba Mattress Toppers Review UK (2026)

Last updated: 26.09.2026 Reading time: 11 Min. Liked by: 17

Simba now sells three mattress toppers, the Cool Foam, the Hybrid Essential, and the original Hybrid, giving you a genuine choice rather than a single option. 🇬🇧

But which one's right for you?

And is Simba's flagship Hybrid topper still worth its higher price tag?

We compare all three in our Simba mattress topper review below, before diving into our full, hands-on experience of the Hybrid topper.

Disclaimer: The main review content is on the flagship Simba Hybrid mattress topper, though we add comparisons between all three Simba toppers throughout.

The Simba mattress toppers:

Foam-Only

Simba Cool Foam Mattress Topper

The Simba Cool Foam topper is an easy way to boost the comfort of your mattress while keeping you at the perfect temperature.
  • Cooling Simbatex foam, high-density foam base
  • 6.5 cm (2.5 inches)
  • Available in standard UK sizes

Tell me more about the Simba Cool Foam mattress topper

The Simba Cool Foam mattress topper features three layers, including a soft knitted cover, cooling Simbatex foam, and a high-density foam support base.

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

Because it's built entirely from foam rather than springs, the Cool Foam topper gives a softer, more body-hugging feel than Simba's hybrid toppers.

The Simbatex foam is infused with graphite and offers over 5 times more airflow than memory foam, helping keep you cool throughout the night.

The foam base also has a contoured, egg-crate-style texture that creates small air pockets, further enhancing airflow and breathability.

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

Reasons to buy

Softer, more body-hugging feel

Excellent airflow and cooling

Simba's most affordable topper

Reasons to avoid

Less supportive than hybrid options with springs

Not as firm as the Essential or Hybrid toppers

Cheaper Option

Simba Hybrid Essential Mattress Topper

The Simba Hybrid Essential topper combines springs and foam for an instant comfort boost, at a lower price than the flagship Hybrid topper.
  • Simbatex foam, Aerocoil microsprings, foam support base
  • 7 cm (2.75 inches)
  • Available in standard UK sizes

Tell me more about the Simba Hybrid Essential mattress topper

The Simba Hybrid Essential mattress topper features four layers, including a soft, breathable cover, Simbatex foam, a layer of up to 1,500 Aerocoil microsprings, and a foam support base.

Both foams are CertiPUR-certified and guaranteed to be free from TCPP, phosphates, parabens, biocides, and persistent organic pollutants.

Because of its hybrid composition, the Essential topper feels firmer and more supportive than Simba's all-foam Cool Foam topper.

The Aerocoil microsprings are conical and compress inwards as you move, pushing air upward and offering responsive, targeted support, but they're small enough that you won't feel them individually.

The Simbatex foam layer adds cushioning on top and enhances airflow, offering over 5 times more airflow than memory foam for a cooler feel.

The Essential topper also features an anti-slip base and elasticated straps to keep it firmly in place, plus a removable, machine-washable cover.

Reasons to buy

Supportive Aerocoil microsprings, unique to Simba

Firmer, springier feel than all-foam toppers

Cheaper than the flagship Simba Hybrid topper

Reasons to avoid

Fewer microsprings than the flagship Simba Hybrid topper (1,500 vs 1,900)

Not as cooling as the flagship Simba Hybrid topper

Sleep Hero Favourite

Simba Hybrid Mattress Topper

The Simba mattress topper is a high-quality hybrid topper designed for firmer, cooling comfort.
  • Simbatex foam, mini pocket springs, high-density base foam
  • 6.5 cm (2.5 inches)
  • Available in standard UK sizes 

Tell me more about the Simba Hybrid mattress topper

The Simba Hybrid mattress topper features three advanced layers, including Simbatex foam, mini pocket springs, and a high-density base foam.

Both foams are CertiPUR-certified [1] and guaranteed to be free from TCPP, phosphates, parabens, biocides, and persistent organic pollutants. 

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

It can also be classified as a cooling mattress topper as the springs allow for maxium airflow.

Additionally, the cover with 3D mesh fabric is ultra-breathable, further enhancing airflow and helping with temperature regulation.

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

Reasons to buy

Firmer, more cooling feel

CertiPUR-US certified 

Risk-free 200-night trial

10-year guarantee

Reasons to avoid

Not as body-hugging as memory foam toppers

Quite expensive 

Simba mattress topper comparison

Simba's three toppers sit at three clear price points, and the difference isn't just cost, it's construction.

The Cool Foam is pure foam, while the Essential and Hybrid both add a layer of Aerocoil microsprings, with the Hybrid getting more of them.

Cool Foam Hybrid Essential Hybrid
Price from £ ££ £££
Composition Foam only (3 layers) Foam + up to 1,500 microsprings (4 layers) Foam + up to 1,900 microsprings (4 layers)
Depth 6.5 cm 7 cm 7 cm
Feel Softer, body-hugging Medium-firm, some bounce Firmest, most bounce
Best for Budget buyers wanting a cooling boost Support-seekers who don't need the top tier Restless sleepers wanting max support & cooling

In short:

  • Want the cheapest way to add some comfort and cooling? → Cool Foam
  • Want spring-based support without paying the fllagship price? → Hybrid Essential
  • Want the most supportive, coolest, bounciest option? → Hybrid

Whichever you choose, all three come with Simba's standard 200-night trial and 10-year guarantee, so the safest way to decide is to try one and see how it feels on your own mattress.

Who is the Simba Hybrid topper best suited to?

The Simba mattress topper is an excellent product that's well suited to:

  • People looking for a slightly firmer topper.
  • Those after a cooling mattress topper.
  • People with a higher budget.
  • Restless sleepers looking for a little more bounce.
  • Those looking for one of the best-quality toppers on the market.

If you're looking for a soft and squishy topper, this is not the one for you, but it will be one of your best choices if you're after something firmer and more cooling. ⭐️

Check out our full rating below before diving into our in-depth Simba Hybrid mattress topper review:

Rating

4.5
  • Material

    Excellent materials.

  • Comfort

    Very comfortable.

  • Off-gassing

    Strong off-gassing that took multiple days to disappear.

  • Breathability

    Excellent temperature regulation.

  • Motion transfer & support

    Excellent support with some bounce.

  • Delivery & returns

    Free delivery, returns, and a 200-night trial.

  • Value for money

    Great product but very expensive.

Material
Comfort
Off-gassing
Breathability
Motion transfer & support
Delivery & returns
Value for money

What does sleeping on the Simba Hybrid topper feel like?

Mattress toppers are designed as comfort layers to change how your mattress feels.

In general, they're meant to add a layer of softness and comfort to firmer mattresses, but our experience with the Simba topper was quite unique.

How firm is the Simba Hybrid topper?

It isn't easy to give a set degree of firmness to mattress toppers in the way you'd give a mattress a firmness level.

This is because the firmness of the topper is directly influenced by the firmness of the mattress underneath.

However, most toppers are designed to be medium firm, making your sleeping surface a little softer and giving your mattress an instant comfort boost.

That said, we were pleasantly surprised to find that the Simba topper gave our soft memory foam mattress a bit more stability.

Memory foam is characteristically softer and allows your body to sink in a little more deeply, but the hybrid composition of the Simba topper made it a little firmer and easier to move around on. 🥳

Simba mattress topper

We wouldn't recommend relying on a mattress topper to make a mattress firmer, but it does help if you're stuck with a memory foam mattress and not a big fan of the way it feels.

The Simba Hybrid mattress topper really feels very different to standard memory foam mattress toppers.

Of course, if your mattress isn't memory foam, you'll still reap the benefits - the Simba topper will still be soft enough to make a firmer mattress feel a little more comfortable.

Read our guide on the best firm mattress toppers for more information.

How comfortable is the Simba Hybrid topper?

We found the Simba topper incredibly comfortable to sleep on.

It's quite unique in that it combines Simbatex foam and pocket springs.

  • The foam provides body-contouring support and pressure relief that's comfortable without being too constrictive, as memory foam often is.
  • The springs provide better support and a gentle bounce-back so you can move easily on the topper, and they adapt well to your body for tension relief.

The Simba topper is particularly well-suited to side sleepers using a slightly firmer mattress. 👌

If your mattress is too firm, pressure points will build up in the hip and shoulder areas, causing back pains and aches.

But adding a topper to the mix will allow for a little extra sinkage, ensuring spinal alignment and keeping you pain- and ache-free.

Can the Simba Hybrid topper add a little bounce?

The Simba Hybrid topper will give you a good amount of bounce.

We like thinking of it in this way:

  • Memory foam is like a dead spot. You'll lie flat and still, and you won't feel any motion carried through.
  • The Simba topper is more "alive". You'll still lie flat and comfortably, but there is a little more movement across the surface as a whole.

If you're a restless sleeper, you'd want to look for a surface feel like the Simba topper. 💃

It makes moving on your mattress easier so you never feel "stuck" in the foams, but motion transfer still stays low.

simba mattress topper comfort

During our Simba Hybrid topper review, we felt more bounce and movement than with memory-foam-only products like the Panda topper, but we never felt excessive motion transfer.

This makes it a great option if you're sharing your bed with a partner. 👩‍❤️‍👨

Does the Simba Hybrid topper sleep hot?

The Simba topper has been designed as a cooling mattress topper with numerous temperature regulation properties:

  • The topper cover is breathable, allowing for a steady flow of air.
  • The side of the cover has a 3D mesh for extra airflow.
  • Simbatex foam has an open-cell structure and larger pores for enhanced breathability.
  • The spaces between the springs allow for natural ventilation channels, further enhancing airflow.

These features promote breathability throughout the topper, wicking away heat and moisture and keeping you cooler and more comfortable all night long.

To test this, we contrasted the Simba topper to the Panda memory foam topper (memory foam is known to retain more heat).

Even though the Panda topper has cooling features, it still felt significantly warmer than the Simba topper.

If you're a heavier sweater or sleep hot, going for a hybrid topper like the Simba is an excellent idea.

Overall, the Simba topper is one of the most comfortable mattress toppers we've ever slept on, and it'll be well-suited to those looking for a cooler and slightly firmer sensation, as well as some added bounce.

Simba Hybrid mattress topper composition

The Simba Hybrid topper aims to replicate the feel of the Simba mattress in a smaller package.

simba mattress topper layers​

There are four layers to the Simba Hybrid topper:

1. Simba mattress topper cover

The Simba mattress topper cover consists of two distinct parts:

  • The top part is 100% polyester, a soft and breathable surface material to enhance the topper's cooling features.
  • The bottom half is an anti-slip base layer with an almost plasticky feel. This helps keep your topper firmly on the mattress.

Conveniently, the top part of the cover is removable and machine-washable at 40℃.

It's pretty easy to take off, but putting it back on again is a bit of a challenge.

During our Simba topper review, we struggled to align the grey mesh side with the sides of the topper - the mesh always seemed to sit slightly further up or down. 😡

This isn't a train smash, but it may be easier to put the cover back on again with two people.

Simba mattress topper cover zipper​

​

The Simba topper also has elasticated corner straps, which fit snugly around your mattress and ensure it stays in place.

In our experience, choosing a topper without straps is a no-go.

We did find, though, that the Simba topper straps are quite tight.

This is great as it ensures your topper sits perfectly, but it could be challenging if you have a very deep mattress. 📏

If you look at the picture below, you can see that the strap stretches quite tightly around an 18 cm (7 inches) mattress.

Simba mattress topper straps​

​​​​​If you have a very deep mattress - 30 cm (11.8 inches) or deeper - this may be a bit of an issue. 🧐

Adjustable straps, as you find with the Panda mattress topper, may be a bit more practical for deep mattresses.

​

2. Simbatex foam comfort layer

This cooling open-cell foam layer provides comfort, support, and enhanced airflow.

It's CertiPUR-US [2] certified to be free from heavy metals like mercury and lead.

The Simbatex foam is also infused with natural graphite, which is known to dissipate heat for a cooler sleep.

​

3. Up to 1,900 Aerocoil titanium alloy microsprings

These conical pocket springs compress inwards as you move, pushing air upward for better ventilation while offering responsive, targeted support.

​

4. High-resilience zoned support base foam

This high-density foam is also CertiPUR-US certified and provides extra stability to the topper.

​

The hybrid composition of the Simba mattress topper is truly unique.

While most mattress toppers are pure foam toppers, the Simba topper combines both foam and conical pocket springs. 🌀

What are the available Simba topper sizes?

All three Simba toppers - Cool Foam, Hybrid Essential, and Hybrid - are available in the same standard UK mattress sizes. 🇬🇧

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

The wide range of sizes is convenient as it ensures you can get the topper for any size bed!

What does the Simba Hybrid mattress topper weigh?

The Simba mattress topper can be quite bulky, depending on the size you go for, but it won't weigh more than 20 kg (44 lbs).

  • Simba mattress topper single: 11.1 kg (24.5 lbs)
  • Simba mattress topper small double: 13.4 kg (29.5 kg)
  • Simba mattress topper double: 14.5 kg (32 lbs)
  • Simba mattress topper king-size: 16.5 kg (36.4)
  • Simba mattress topper super king-size: 19.1 kg (42.1 lbs)

Luckily, mattress toppers won't have to be moved often as your mattress protector and bedding will stretch above the topper itself.

What is the Simba Hybrid mattress topper depth?

The Simba Hybrid topper has a depth of 7 cm (2.7 inches).

This is a good depth for toppers, above the industry standard of 5 cm (1.9 inches). 🥳

It also ensures that the topper really does change the way your mattress feels!

One issue you may encounter with deeper toppers like the Simba is that you need fitted sheets that'll go over the depth of the topper and your mattress.

Luckily, Simba offers a fantastic range of bedding specifically designed to stretch over higher mattresses or mattress and topper combos.

Simba mattress topper prices and discounts

The Simba mattress topper is an excellent product, but it's much more expensive than other mattress toppers on the market.

The premium price is primarily due to the hybrid nature of the topper as pocket-sprung products are generally more expensive than all-foam products.

Luckily, though, Simba has also introduced a few cheaper topper options, so if you like the sound of Simba's technology but want to spend less, the Cool Foam or Hybrid Essential toppers are worth considering (see our comparison above).

The Simba Hybrid Essential topper in particular is almost identical to the Hybrid topper, but available at a cheaper cost.

You'll also occasionally find Simba mattress topper discounts, including percentage-off vouchers - if there are any Simba mattress topper discounts currently running, we'll display them throughout this article. ​​

Simba topper delivery and trial conditions

All three Simba toppers are delivered rolled up and boxed. 📦

Conveniently, Simba offers free next-day delivery on all toppers if you order before 1pm.

Simba mattress topper box

Simba mattress toppers are much smaller and lighter than the actual mattress, but the box is still quite large, so you may need a bit of help carrying it if you're of a more petite build. 💪

We needed some help for our Simba topper review.

How do you unpack your Simba mattress topper?

The Simba mattress topper is compressed but unboxing is very simple:

  • Open the box on top of your mattress and roll out your mattress topper.
  • Cut off the plastic wrapping.
  • Roll out the topper across your bed.
  • Leave it to expand for at least 2 hours.

Your topper should be fully expanded in a maximum of 24 hours. ⏰

unwrapping simba mattress topper

What's that smell?

Many bed-in-a-box mattresses and sleep products emit a chemical smell when you first unpack them. 🧪

This is called off-gassing, and while it's completely normal and non-toxic, the smell can be really unpleasant.

Unfortunately, we experienced severe off-gassing when we first unpacked the topper for our Simba mattress topper review. 😱

It took 3 or 4 days for the smell to disappear completely, but we didn't have any problems after that.

We'd always recommend that you unpack your new bed products in a well-ventilated room and let them air until the smell disappears.

Do Simba mattress toppers come with a trial period?

Conveniently, every Simba mattress topper comes with a risk-free 200-night trial period.

This is a big up from the previous 14-day return policy Simba used to offer with its topper.

200 nights is great, as it'll give you plenty of time to test the topper and see if it works for you.

If you're not sleeping more comfortably than ever before, you can simply send the topper back and get a full refund.

Every Simba mattress topper also comes with a 10-year guarantee.

Is the Simba Hybrid mattress topper worth the money?

There's no denying that the Simba Hybrid topper is an excellent mattress topper, despite its significantly higher price tag.

If you have the budget available, this is an excellent buy.

We'd also highly recommend it to anyone looking for a cooler and firmer mattress topper.

And if you're looking for Simba technology at a slightly lower price point, the Simba Cool Foam and Simba Hybrid Essential mattress toppers are also worth checking out.

Contact Simba Sleep UK

Customer service: To contact Simba Sleep directly for complaints, support, or queries, please e-mail them at hello@simbasleep.com or visit their live online chat. The customer services team is available Monday to Friday, from 9 am - 5 pm, and Saturdays from 9 am to 1 pm.

Registered office: Simba Sleep Limited, 5th Floor Halo Counterslip, Bristol, BS1 6AJ

Frequently asked questions

  • Do I need a mattress topper or a new mattress?


    Mattress toppers are great but they can't fix all of your mattress-related problems.

    If you have an old mattress that's worn out or sagging, you will have to buy a brand new mattress.

    So how do you know if you need a new mattress or a new mattress topper? 🤔

    If you have a high-quality mattress that's in a good condition but just a little too firm for you, you probably only need a mattress topper.

    But also ask yourself the following questions:

    • Is my mattress old, worn out, or sagging?
    • Is my mattress too soft and do I sink into the foams too deeply?
    • In the case of spring mattresses, do I feel the springs in my back?
    • In the case of foam mattresses, are there visible dents that I feel while sleeping?

    If the answer to any of these is "yes", then you'd probably need a new mattress. ✅

    Check out our guide on the best mattresses in the UK to help you choose the right one.

  • Can I put a mattress topper on a Simba mattress?


    Yes, though you'd only need one if your mattress feels too firm for you.

    Each Simba topper is designed to complement the feel of Simba's mattresses, so if you don't like the feel of your mattress, a topper won't fix that entirely.

    That's why we always recommend using the 200-night risk-free trial period the Simba mattresses come with to decide if they're a good fit for you.

  • Can I buy a Simba memory foam mattress topper?


    Simba mattress toppers are not memory foam toppers.

    The Cool Foam topper is Simba's closest all-foam option, using open-cell Simbatex foam rather than springs, but it isn't true memory foam either. The Hybrid Essential and Hybrid toppers combine Simbatex foam with Aerocoil microsprings.

    Simba doesn't have many memory foam products, though you will find memory foam in the Simba Hybrid pillow.

    If you're looking for a pure memory foam mattress topper, we'd recommend trying out the Panda memory foam topper.

  • Where is the Simba mattress topper made?


    The mattress topper Simba sells is sourced and made in Europe.

    Mattress topper factories are based in the UK and Poland.

  • Are Simba mattress toppers environmentally-friendly?


    Like all Simba products, the foams used in the Simba mattress topper are guaranteed to be pro-planet.

    They're free from TCPP, phosphate, parabens, biocides, organic pollutants, and other chemicals. 

    Simba foams are also CertiPUR-certified [2].

  • Can I buy the Simba Hybrid mattress topper on Amazon?


    Yes, the Simba Hybrid mattress topper is available on Amazon in the UK.

    You can also find it at a few other retailers, such as the Simba mattress topper Argos selection.

    But, we always recommend buying directly from Simba Sleep as it guarantees the best discounts and trial conditions.

  • How do I store a Simba mattress topper?


    Conveniently, all three Simba toppers' elasticated corner straps serve a dual purpose.

    Not only do they keep the topper firmly on your mattress, but they also allow you to roll it up and use the straps to fix it in place.

  • References

Nicky

Nicky Peters

Editor & Certified Sleep Therapist

Nicky is an experienced writer and editor with numerous qualifications. As a certified sleep coach, her interests lie in understanding how sleep problems arise from hormonal and environmental issues, particularly as part of stress and anxiety management.

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