Medium Firm King Size Mattress

Enjoy a spacious and supportive night’s sleep with the eze™ medium-firm king-size mattresses, named Which? Best Buy for four consecutive years.

Our medium-firm king-size mattresses feature a hybrid design that blends pocket springs and memory foam for balanced comfort and reliable support. They contour to your body, relieve pressure points, and keep your spine aligned throughout the night. Perfect for couples or anyone who likes extra room to stretch out.

Each eze™ mattress arrives rolled and boxed for easy delivery and expands quickly once opened. You also get a 10-year guarantee and free 48-hour delivery across the UK.

If you want a versatile mattress that offers both comfort and stability, a medium-firm king-size mattress is a smart choice. It suits most sleeping styles and helps you wake up rested and refreshed. Order yours online today.

Medium Firm King Size Mattress FAQs

What is the best medium-firm king-size mattress?
The best medium-firm mattress provides a mix of comfort, support, and breathability. eze™ hybrid mattresses combine memory foam and pocket springs to achieve that balance. Our cooleze™ range also features cooling gel technology, with added breathability for a cool night’s sleep all year-round. 

Who is a medium-firm mattress best for?
It’s ideal for back and stomach sleepers who need consistent support. It also works well for couples with different comfort preferences.

Can I get a medium-firm king size mattress with finance?
Yes, you can spread the cost with interest-free mattress credit from £29.93 per month through DivideBuy or pay later with Klarna.

Is a king-size mattress good for couples?
Yes, a king-size mattress measures 5ft across and gives both sleepers more space. This helps reduce movement transfer and can help you sleep undisturbed.

Do eze™ mattresses come with a guarantee?
Yes, all of our hybrid mattresses include a 10-year guarantee and free 48-hour delivery for complete peace of mind.

How do I know if medium firm is right for me?
Choose medium firm if you want balanced support that feels comfortable without being too soft or too rigid. It suits most sleeping positions and body types.

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Why Choose eze™ Mattress

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Hybrid Mattress FAQs

1

What is a Hybrid Mattress?

A hybrid mattress, sometimes called a combination mattress, uses memory foam and pocket springs to provide the optimal balance of comfort and support.Our award-winning eze™ hybrid mattresses have multiple layers and combine different mattress technologies.

  1. The top layer is a hypoallergenic soft knit fabric cover that stops dust mites and allergens from penetrating the surface,
  2. Our ezeCORE™ memory foam layer is a high-density layer that provides a stable core to prevent mattress sagging.
  3. Next is our MEMOReze™ memory foam layer, which is highly breathable for temperature regulation and contours to your body to provide needed support and pressure relief. If you choose our Cooleze™ mattresses, this layer will feature gel-infused memory foam mattress layers to provide superior cooling.
  4. Our fourth layer is the Pockeze™ spring system, which features pocket spring units for a highly resilient comfort layer.
  5. Finally, there is the anti-slip base cover, which keeps the mattress securely on your bed frame.
2

Are Hybrid Mattresses Good?

Hybrid mattresses are becoming one of the most popular types of mattresses. By combining the best parts of different mattress technologies, hybrid mattresses have become the ultimate way to get a restful night’s sleep.The main benefits of a hybrid mattress include:

  1. Supremely comfortable - our hybrid mattresses use memory foam layers and pocket springs for a luxurious feel you can’t get from other mattress types.
  2. Amazing support—the combination of memory foam and pocket springs provides targeted pressure relief, which can help with aches, pains, and general discomfort.
  3. Great temperature regulation - our memory foam layers are breathable and help dispel body heat. Our Cooleze™ gel-infused memory foam layers offer superior temperature regulation for the perfect cool night’s sleep.
  4. Perfect for couples and light sleepers - hybrid mattresses are less disruptive than traditional sprung mattresses and allow independent movement so your motion won’t be transferred to your partner.
  5. Easy to install—Our hybrid mattresses are delivered in a box, otherwise known as a rolled mattress. After unwrapping, they inflate back into shape, making installation incredibly easy.
3

Are Hybrid Mattresses Better Than Memory Foam?

Memory foam mattresses are among the most popular mattress types. They provide a soft sleeping surface that can mould your body. But if you prefer firmer support and superior temperature regulation, you will love our hybrid mattresses.
Hybrid mattresses use memory foam layers so you can still get that cloud-like contouring feeling. However, they also use pocket springs and gel-infused memory foam (with our Cooleze range) to provide the best balance of support and cool comfort.

4

Which eze™ Hybrid Mattress is Right for Me?

We offer four types of mattresses that can suit every type of sleeper, no matter your budget.
Our eze™ Hybrid Max mattress is soft to medium and features two memory foam layers and 2000 pocket springs. It’s the best choice for those who prefer the best levels of support and pressure relief for uninterrupted sleep.
Our eze™ Hybrid Ultra mattress is best for those who would like a softer mattress, while still delivering support and breathability. It features four levels of memory foam and has 800 pocket springs.
For those who want a gel-infused memory foam mattress, you can’t go wrong with our Cooleze™ range.
Our Cooleze™ Hybrid Deluxe mattress provides medium firmness, 1000 pocket springs, a memory foam layer, and a gel-infused memory foam layer for superior temperature regulation.
Finally, our most affordable mattress, the Cooleze™ Hybrid Original has 600 pocket springs with the same layers as our Cooleze™Hybrid Deluxe.
Whatever you choose, you can expect the same level of quality with free next day delivery and a 10-year guarantee.

5

What Size Hybrid Mattresses Are Available?

Our full range of sizes includes:

  • Single mattresses- 3ft wide and 6ft 3ins long (90 x 190cm)
  • Small double mattresses, otherwise known as a UK queen size - 4ft wide and 6ft 3ins long (120 x 190cm)
  • Double mattresses - 4ft 6ins wide and 6ft 3ins long (135 x 190cm)
  • King mattresses- 5ft wide and 6ft 6ins long (150 x 200cm)
  • Super king-size mattresses - 6ft wide and 6ft 6ins long (180 x 200cm)
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