Collection: Medium Firm King Size Mattress

Enjoy a spacious and supportive night’s sleep with the eze™ medium-firm king-size mattresses.

  • Cooleze™ Hybrid Platinum Mattress

    Cooleze™ Hybrid Platinum Mattress

    Transform your sleep with the Cooleze™ Hybrid Platinum hybrid mattress. Combining advanced cooling gel memory foam w...
    Regular price
    From £512.10
    Sale price
    From £512.10
    Regular price
    £569.00
  • Cooleze™ Hybrid Original Mattress

    Cooleze™ Hybrid Original Mattress

    Experience a cool and relaxing night's sleep with the Cooleze™ Hybrid Original cool gel mattress. Designed to provide...
    Regular price
    From £359.20
    Sale price
    From £359.20
    Regular price
    £449.00

Why Choose eze™ Mattress

Award Winning Mattresses

Our eze™ Hybrid Max and eze™ Hybrid Ultra achieved a Which? Best Buy

Free Next Day Delivery

It’s easy to get our hybrid mattresses in a box delivered to your door

10-Year Guarantee

All eze™ Mattresses come with a 10-Year Guarantee

Sleep Now Pay Later

With 0% finance from £35.55 per month with Zopa or pay later with Klarna

Medium Firm King Size Mattress FAQs

Find answers to common questions about our products

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. 

It’s ideal for back and stomach sleepers who need consistent support. It also works well for couples with different comfort preferences.

Yes, you can spread the cost with interest-free mattress credit from £29.93 per month through Zopa or pay later with Klarna.

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.

Yes, all of our hybrid mattresses include a 10-year guarantee and free next day delivery for complete peace of mind.

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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