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100 Night Sleep Trial on ALL mattresses!

100 Night Sleep Trial

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100 Night Sleep Trial

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Features you'll love

Support System

Pocket Springs

Individually pocketed springs work to give you support exactly where you need it.

Comfort Fillings

British Wool

Soft, breathable, and temperature-regulating for comfort all year round.

Firmness

Medium Firm

Good for people who change sleeping position.

Description

At the most premium end of the Simba Natural Hybrid® range sits the Simba® Apex Mattress. With twelve meticulously crafted layers designed to offer you full-body support and comfort, plus an orthopaedic construction that sets you up for everyday, ache-free, this mattress is designed to elevate your sleep and improve your lifestyle.

12 layers of comfort and support for any type of sleeper

With up to 6,700 springs and a sumptuous 32cm depth, the Simba® Natural Hybrid® Apex Mattress is specially engineered to deliver the kind of restorative rest you can truly feel, night after night. And available in double, king, or super king sizes, this is one of the best mattresses for couples who never compromise on comfort.

Cashgora, silk, and wool layers add luxury, cushioning, and breathability

A top layer of luxurious Cashgora and silk provides soft, breathable cushioning, plus temperature regulation that prevents you from getting too warm. Wicking away excess moisture, these luxury natural fibres offer a drier, more comfortable sleeping environment that's as premium as it sounds. Beneath this is a layer of gentle Hampshire wool, plus five further layers of British wool. Offering exceptional airflow and moisture control, these wool keep you cool and fresh while hugging your body in intense comfort.

Adaptive pressure relief from durable British-made steel springs

For an impressively close level of support, two layers of Aercoil springs provide highly responsive pressure relief. Made from British steel, these small but strong springs adapt to your every move, targeting support exactly where you need it. Supported by the CoreMax base of full-size British-made steel pocket springs, which provide an even deeper level of support, these support systems create an orthopaedic level of comfort that helps to ease back and joint pain.

Wake up the best version of you with orthopaedic support

By helping to align your spine with your hips and shoulders, orthopaedic support encourages a healthier sleeping posture, in turn reducing tension throughout your body. The Simba® Natural Hybrid® Apex Mattress provides this essential level of support, helping you wake up truly refreshed and rejuvenated every morning.

Glue-free construction and plant-based cover for a healthier sleep

The CoreMax base is also crafted with a glue-free construction, which is better for you and the planet. This eco-conscious design goes hand in hand with the plant-based viscose cover that finishes the mattress, providing enhanced breathability and a silky soft feel. Naturally hypoallergenic, the Simba® Natural Hybrid® Apex Mattress is ideal for allergy sufferers or anyone looking for a healthier, more hygienic sleeping environment that provides incredible levels of support and comfort.

1278825-5063475203708

Features

Aerocoil® Spring Support Multi-Layers

Multiple layers of British steel-made Aercoil® springs provide targeted support to your entire body. These small but mighty springs ensure every inch of your body receives impressive pressure relief for a night of rejuvenating rest.

Sustainably Sourced Hampshire Wool

Cosy and cushioning, Hampshire wool is known for its durability and elasticity, making it the perfect material for adding extra comfort to your mattress. Plus, you can sleep even easier knowing it's sustainably sourced.

Cashgora & Silk Cushioning Layer

Cashgora (a fibre from a crossbreed of mohair-producing Angora goats and cashmere goats) adds softness and durability, while silk provides a lightweight, fresh feel that wicks away moisture and regulates your temperature.

32cm Depth

This mattress is approximately 32cm deep.

Plant-Based Viscose Sleep Surface

Silky smooth and highly breathable, this premium sleep surface is made from plant-derived viscose for a fresher, more sustainable night's sleep.

Orthopaedic Support

Designed to offer a firmer sleep surface, providing targeted support for your back and joints.

Reinforced Edges

The mattress has reinforced edges, so that the full sleep surface can be used. This means more sleeping space - which is usually lost in conventional, less edge-stable mattresses.

No Need To Turn

A single-sided mattress which does not need to be turned/flipped. One-sided mattresses should, however, be rotated head to toe regularly.

No Roll Together

Individual personal sleeping zones mean that you won't be disturbed if your partner rolls or moves, as you won't feel their motion. There's also no tendency to roll towards the middle of the mattress.

Turning Handles

Flag-stitched handles are attached to the sides of the mattress to assist in turning or rotating.

Hypoallergenic

Being hypoallergenic, this is the perfect item for allergy sufferers - or anyone looking for a healthy night's sleep.

CoreMax™ Sprung Base

British steel pocket springs with a glue-free construction form a base of deep, stable support. Arranged in seven zones to match the needs of the different parts of your body, these springs help to keep you in the healthiest sleeping posture.

Invisible Tufting

Invisible tufts keep the mattress surface smooth and comfortable whilst harnessing the durability benefits of traditional tufting.

Made in the UK

This item has been manufactured in the UK.

Fire Resistant - Low Hazard

This product conforms to the BS7177: 2008 standard for domestic use (low hazard) - ideal for use at home.

Additional features

Made by an NBF-Approved ManufacturerPeace of mind and reassurance - the manufacturer of this item is an approved member of the National Bed Federation.

Benefits

Prevents back and joint pains thank to impressive orthopaedic support
Promotes a healthier sleeping posture by encouraging proper spinal alignment
Gentle natural fibres ease tension for full-body pressure relief
Wicks away excess moisture and regulates body temperature for deeper sleep
Minimises partner disturbance, letting light sleepers enjoy a proper rest
Luxury natural materials and British-made springs create a premium feel

Awards

Good Housekeeping Institute 2025

Good Housekeeping's Textile Lab extensively researches the best brands, features and materials on offer to recommend only the most premium mattresses. Voted for by product testing experts as well as a diverse panel of customers, a Good Housekeeping Institute Approved badge is a sign of a mattress' ability to perform exactly as it promises.

Zerowasted.co.uk - Best Buy

Helping shoppers make eco-conscious purchases, Zero Wasted hand-selects and compares the products that make it easier to switch to a more ethical, environmentally friendly lifestyle. Their Best Buy awards highlight the products and brands that prioritise sustainability.

You've got the best price

As Online Bed Retailer of the Year 2025 - 2026, you can trust us to get you the best price. With our fast delivery and exceptional service, you won't find better elsewhere.

Simba® Natural Hybrid® Apex Mattress

Experience restful nights and wake up pain-free with supportive, orthopaedic comfort.

Aerocoil® Spring Support Multi-Layers

Sustainably Sourced Hampshire Wool

Cashgora & Silk Cushioning Layer

32cm Depth

Firmness: Medium Firm

£1499

RRP £1999

Save £500

from £1499

Size

Double 4'6" x 6'3"

£1499 RRP £1999

Only 2 left

King Size 5' x 6'6"

£1569 RRP £2099

In stock

Super King 6' x 6'6"

£1949 RRP £2599

In stock

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FREE delivery Tomorrow, 20th January
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Description & Features

12 layers of comfort and support for any type of sleeper

Cashgora, silk, and wool layers add luxury, cushioning, and breathability

Adaptive pressure relief from durable British-made steel springs

Wake up the best version of you with orthopaedic support

Glue-free construction and plant-based cover for a healthier sleep

Aerocoil® Spring Support Multi-Layers

Sustainably Sourced Hampshire Wool

Cashgora & Silk Cushioning Layer

32cm Depth

This mattress is approximately 32cm deep.

Plant-Based Viscose Sleep Surface

Silky smooth and highly breathable, this premium sleep surface is made from plant-derived viscose for a fresher, more sustainable night's sleep.

Orthopaedic Support

Designed to offer a firmer sleep surface, providing targeted support for your back and joints.

Reinforced Edges

The mattress has reinforced edges, so that the full sleep surface can be used. This means more sleeping space - which is usually lost in conventional, less edge-stable mattresses.

No Need To Turn

A single-sided mattress which does not need to be turned/flipped. One-sided mattresses should, however, be rotated head to toe regularly.

No Roll Together

Turning Handles

Flag-stitched handles are attached to the sides of the mattress to assist in turning or rotating.

Hypoallergenic

Being hypoallergenic, this is the perfect item for allergy sufferers - or anyone looking for a healthy night's sleep.

CoreMax™ Sprung Base

Invisible Tufting

Invisible tufts keep the mattress surface smooth and comfortable whilst harnessing the durability benefits of traditional tufting.

Made in the UK

This item has been manufactured in the UK.

Fire Resistant - Low Hazard

This product conforms to the BS7177: 2008 standard for domestic use (low hazard) - ideal for use at home.

Prevents back and joint pains thank to impressive orthopaedic support
Promotes a healthier sleeping posture by encouraging proper spinal alignment
Gentle natural fibres ease tension for full-body pressure relief
Wicks away excess moisture and regulates body temperature for deeper sleep
Minimises partner disturbance, letting light sleepers enjoy a proper rest
Luxury natural materials and British-made springs create a premium feel

Additional features

Made by an NBF-Approved ManufacturerPeace of mind and reassurance - the manufacturer of this item is an approved member of the National Bed Federation.

1278825-5063475203708

Awards & Accolades

Good Housekeeping Institute 2025

Zerowasted.co.uk - Best Buy

Simba® 10 Year Guarantee

Simba® 10 Year Guarantee

Simba are certain you’ll love your new mattress, but for complete peace of mind they offer a 10 year guarantee. In the very unlikely case that you discover a defect as a result of faulty workmanship or materials, they’ll swap it for a new one. Please see: https://simbasleep.com/pages/ten-year-guarantee for further info.

100 Night Sleep Trial

Finding the perfect mattress shouldn't be stressful. That's why we offer a generous 100-night sleep trial. Snuggle in and test it out for at least 50 nights. If it's not your perfect, match we’ll offer you an exchange for a mattress that you love even more.

Delivery & Recycling

We provide our award-winning Free Next Day Delivery service to most locations, sending a proper night’s sleep out far and wide. Hassle-free and convenient, you can even choose a time and day that suits you, have us take your old mattress away for recycling, and get us to deliver to your room of choice!

In some places, a small fee will be charged to help us get you your best night’s rest as quickly as possible. Take a look at the following postcodes to see if this applies to you, and if you’re not sure, then use our helpful Postcode Checker to help you shop with confidence.

AB10-AB16, AB21-AB25, AB30-AB39, AB41-AB45, AB51-AB56
CA1-CA9
DD1-DD11
DG1-DG14, DG16
EH1-EH49, EH51-EH55, EH91, EH95, EH99
FK1-FK21
G1-G5, G9, G11-G15, G20-G23, G31-G34, G40-G46, G51-G53, G58, G60-G79, G18-G84, G90
IV1-IV19, IV30-IV32, IV36
KA1-KA30
KY1-KY16, KY99
LA1-LA7
ML1-ML12
PH1-PH26
TD1-TD15

Old Mattress Removal

For just £39, our fast and friendly team will collect your old mattress at the exact same time we deliver your new one. No waiting, no heavy lifting, and no clutter. 100% of your old mattress is carefully recycled and kept out of landfill. Simply select 'Old Mattress Removal' at checkout.

Sustainability

Your order helps us plant trees

151,470+ Trees planted so far

Frequently paired with

More Medium Firm Mattresses

More with Orthopaedic Support

More from Simba®

More to explore

Simba® Pocket Sprung Mattresses Orthopaedic Mattresses

Your order helps us plant trees

151,470+ Trees planted so far

Free, fast delivery

Award winning delivery

Mattress recycling

Planet-friendly disposals

0% Interest finance

Buy now, pay later with Klarna

18+, T&Cs apply, Credit subject to status

Simba® Natural Hybrid® Apex Mattress

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*Delivery charges may apply for some areas. Please see our delivery page for more information.
1. Order by 6pm for next day delivery between Monday-Friday, 12pm on Saturday and 3pm on Sunday. The 'Order by' time may be subject to change dependant on our delivery partners.

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MattressNextDay, 116 Joseph Wilson Industrial Estate, Whitstable, Kent, CT5 3SN

We value your privacy

Features you'll love

12 layers of comfort and support for any type of sleeper

Cashgora, silk, and wool layers add luxury, cushioning, and breathability

Adaptive pressure relief from durable British-made steel springs

Wake up the best version of you with orthopaedic support

Glue-free construction and plant-based cover for a healthier sleep

Additional features

Simba® Natural Hybrid® Apex Mattress

12 layers of comfort and support for any type of sleeper

Cashgora, silk, and wool layers add luxury, cushioning, and breathability

Adaptive pressure relief from durable British-made steel springs

Wake up the best version of you with orthopaedic support

Glue-free construction and plant-based cover for a healthier sleep

Additional features

Old Mattress Removal

Frequently paired with

More Medium Firm Mattresses

More with Orthopaedic Support

More from Simba®

You might also like

More to explore

Your order helps us plant trees

Free, fast delivery

Mattress recycling

0% Interest finance

Simba® Natural Hybrid® Apex Mattress

£

Pair it with

MattressNextDay