Simba Earth Mattress

Simba Earth Mattress Collection Review UK | 2025

Last updated: 10.09.2025 Reading time: 6 Min.

Simba’s Earth Collection is an eco-friendly range crafted from more environmentally-friendly materials and designed foam-free for enhanced recyclability.

It aims to offer comfort while reducing environmental impact. 🌱

But do these mattresses live up to expectations?

And should the Earth range be your next go-to choice?

Let’s find out in our Simba Earth mattress review.

Advantages:

  • Excellent comfort, support, and breathability.
  • Rely on eco-friendly materials.
  • Foam-free for easier recycling.
  • Made in the UK.
  • Delivered flat-packed with minimal packaging.
  • VIP delivery service.
  • 200-night trial period.
  • 10-year guarantee.

Disadvantages:

  • May not be firm enough for stomach sleepers.
  • Not a bed-in-a-box, so may not work if you have very tight spaces.
  • More expensive than other bed-in-a-box options.

Who are the Simba Earth mattresses most suitable for?

The Simba Earth Collection mattresses have been designed for eco-conscious sleepers who value both comfort and sustainability. 🌱

They're ideal for those who want mattresses that blend comfort, support, and more environmentally-friendly materials.

Types of sleepers
The Simba Earth mattresses are most suitable for:

People looking for an eco-friendly mattress option.

Back and side sleepers who need balanced support.

Those who tend to overheat at night and want good temperature regulation.

The Simba Earth mattresses may be less suitable for:

Stomach sleepers who need firmer support.

Those on a tighter budget needing a more affordable option.

The Source mattress is the entry-level option of Simba’s Earth range, with even more premium options - the Escape and the Apex - also available.

Rating

4.6
  • Material

    Natural materials of premium quality

  • Comfort

    Comfortable but may be too plush for some sleepers

  • Off-gassing

    Not compressed, so zero off-gassing

  • Breathability

    Excellent breathability

  • Motion transfer & support

    Excellent motion transfer and support, but could be too plush for some

  • Delivery & returns

    Free VIP delivery with room-of-choice options

  • Value for money

    Expensive mattresses but excellent quality

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

What is the Simba Earth Collection range?

The Earth Collection is one of Simba's newest mattress ranges, representing the company’s commitment to sustainability without compromising on comfort.

simba earth mattress in dark room

This eco-friendly range of mattresses is designed using responsibly sourced materials and innovative technologies, aiming to reduce environmental impact while providing exceptional sleep quality. ♻️

Currently, there are three mattresses in Simba’s Earth range:

  • Simba Earth Source mattress: This is the entry-level Earth mattress. It features 8 layers, including multiple wool layers and up to 3,250 springs. It has a depth of 28 cm (11 inches).
  • Simba Earth Escape mattress: The next tier up, the Escape mattress features 10 layers, including wool layers and up to 4,250 springs. It has a depth of 30 cm (11.8 inches).
  • Simba Earth Apex mattress: The most luxurious option, the Apex mattress features 12 layers, including numerous wool layers and up to 5,750 springs. It has a depth of 32 cm (12 inches).

Each mattress in Simba’s Earth range incorporates natural fibres and recycled materials, catering to the growing demand for sustainable sleep solutions.

How comfortable are the Simba Earth mattresses?

Even if you have the most eco-friendly mattress in the world, you still need it to be super comfortable.

Luckily, Simba is well-known for its superior mattresses - and all the ones we’ve tried have been super comfortable to sleep on!

The Earth mattresses, with their thoughtfully layered construction, balance support, breathability, and motion isolation, making them a suitable choice for different types of sleepers.

How firm are the Simba Earth mattresses?

The Simba Earth mattresses are rated as medium-firm, making them a great choice for back sleepers and side sleepers.

medium-firm simba earth mattresses

They provide a supportive feel while still offering enough cushioning to alleviate pressure points, promoting proper spinal alignment.

Stomach sleepers may need something a little firmer (like the Origin Hybrid mattress) for proper spinal alignment, but you may need to test to see if it works for your build.

Smaller builds, for example, will do just fine on a medium-firm mattress, even as stomach sleepers.

Worth noting: The more luxurious Earth mattresses feature a plush pillow top, which may not be suitable for sleepers who prefer more solid solid sleeping surfaces.

Luckily, the Simba Earth mattresses come with a risk-free 200-day trial, so you can simply send the mattress back if it doesn’t work for you.

How breathable are the Simba Earth mattresess?

Thanks to the inclusion of multiple breathable and airflow-enhancing materials, the Earth mattresses can offer excellent temperature regulation. ❄️

The wool layers wick away moisture, while the Aerocoil springs enhance airflow, keeping you cooler and more comfortable throughout the night.

temperature regulation on simba earth mattresses

That said, some sleepers do find that wool layers increase the overall temperature, which could be likely if you’re a very hot sleeper.

We’d recommend pairing your mattress with a breathable duvet, like Simba’s lightweight 3-in-1 duvet, to ensure heat and moisture aren't trapped in your bed.

Are the Earth mattresses suited to couples?

Springs can often lead to greater motion transfer, so this is a valid concern when looking at mattresses with a sprung base.

But the Quadcore design allows the base to be sturdier, allowing for better edge-to-edge support and enhanced motion isolation.

This makes the Earth Range a good option for couples.

Simba Earth mattress composition

The Simba Earth mattresses are built with sustainability and comfort at the core, featuring multiple carefully designed layers.

Each layer plays a role in ensuring a balance of support, pressure relief, and temperature control while using more eco-friendly materials.

Let's look at the different compositional features in more detail:

Simba Earth Source mattress

The Source mattress is the entry-level option of the Simba Earth range.

  • Layers: 8
  • Depth: 28 cm (11 inches)
  • Feel: Medium-firm
  • Composition: 1 layer of Aerocoil® spring comfort, a CoreMax™ sprung base, 3 layers of British Wool, and 2 layers of Hampshire wool. It also includes a silky, plant-based viscose cover

Simba Earth Escape mattress

The Escape mattress is the mid-range option, offering a more premium feel at a slightly higher price point.

  • Layers: 10
  • Depth: 30 cm (11.8 inches)
  • Feel: Medium-firm/plush
  • Composition: 2 layers of Aerocoil® spring comfort, a CoreMax™ sprung base, 4 layers of British Wool, 2 layers of Hampshire wool, and 1 layer of Cashgora & Silk.

Simba Earth Apex mattress

The Apex mattress is the most luxurious natural hybrid in Simba's Earth range.

  • Layers: 12
  • Depth: 32 cm (12 inches)
  • Feel: Plush
  • Composition: 2 layers of Aerocoil® spring comfort, a CoreMax™ sprung base, 5 layers of British Wool, and 1 layer of Hampshire wool
The Earth mattresses are all compositionally similar, but the more premium options feature more layers and a greater depth.

Simba Earth mattress cost and discount codes

Natural mattresses are never cheap, but the Earth mattresses aim to be very competitively priced, offering excellent value with eco-friendly design.

Of course, Simba also caters to entry-level, mid-range, and premium buyers.

Simba does occasionally offer discount codes for select periods, like Black Friday or Boxing Day, so it’s worth keeping an eye on peak times to see if you can snag a promotional offer. 🥳

If there are any promotions currently running, we’ll be sure to advertise them across this article.

Simba Earth Collection delivery conditions

Delivery conditions with the Earth range are slightly different to Simba's standard, and you’ll get a premium VIP delivery service free of charge.

  • Earth mattresses are delivered flat, ready for immediate use.
  • They’re packed in a protective damp-proof plastic bag made from 30% recycled plastic, with FSC-certified [1] cardboard corners.

Since the mattresses can be quite heavy, Simba recommends that its team brings your new mattress directly to your room of choice. 💪

Look at our FAQ section for details on the 200-day trial period and the 10-year guarantee.

Should you buy the Simba Earth mattresses?

If you’re looking to venture into more eco-friendly mattresses, the Simba Earth mattresses are a no-brainer.

These are great foam-free mattresses made from more environmentally-friendly materials that’s also more recyclable, and they come in at very competitive price points.

Add in Simba's excellent reputation for delivering quality mattresses, a risk-free 200-day trial, and a 10-year guarantee, and you know you're in for a good deal.

Contact Simba Sleep UK

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

Registered office: Simba Sleep, The Stable Yard, 60 Petty France, Westminster, London SW1H 9EU

Frequently asked questions

  • Do the Simba Earth mattresses come with a trial period?


    All mattresses in Simba’s Earth range come with a risk-free 200-day trial period.

    If you’re not happy with your purchase, simply send it back within the trial to get a full refund.

  • Do the Simba Earth mattresses come with a guarantee?


    All Simba mattresses come with a 10-year guarantee to protect you from manufacturing faults. 

  • In what sizes are the Simba Earth mattresses available?


    The Simba Earth mattresses are available in most standard UK mattress sizes.

    • Simba Earth mattress single: 90 x 190 cm (3’ x 6’3”)
    • Simba Earth mattress double: 135 x 190 cm (4’6” x 6’3”)
    • Simba Earth mattress king: 150 x 200 cm (5’ x 6’6”)
    • Simba Earth mattress super king: 180 x 200 cm (6’ x 6’6”)

    The height differs between the Source, Escape, and Apex mattresses.

  • Are Simba Earth mattresses handmade?


    Simba Earth mattresses are hand-tufted with care.

    • Many of the crops and materials are grown, harvested, and processed on a Yorkshire farm.
    • The factory, also located in Yorkshire, is manned by skilled craftspeople.
    • High-tech machines are used to ensure proper measures in every layer, but the team itself stitch and tuft the layers, maintaining traditional craftsmanship.

    This ensures that Simba mattresses remain excellent. 

  • Why are Simba Earth mattresses more recyclable?


    The Earth mattresses are designed to be foam-free, which makes recycling easier.

    Simba is also committed to a zero-landfill policy, and offers a specialist mattress removal and recycling service. 

  • Where are Simba Earth mattresses made?


    Simba Earth mattresses are hand-assembled and hand-tufted in UK factories. Springs are made in Leeds, while raw materials and factories are in Yorkshire. 

  • 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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