King Mattresses

Enjoy the luxury and comfort of our extensive collection of king-size mattresses when you shop with OMF. Each mattress adheres to standard king-size dimensions, ensuring a perfect fit for your room. Whether you love soft, medium or extra firm, out of all our king mattresses, we surely have one for you!

33 of 159 products

  • Refresh Firm King Mattress

    Refresh Firm King Mattress

    22 total reviews

    Regular price $1,358
    Sale price $1,358 Regular price $2,848
  • Refresh Medium King Mattress

    Refresh Medium King Mattress

    23 total reviews

    Regular price $1,358
    Sale price $1,358 Regular price $2,848
  • Refresh Soft King Mattress

    Refresh Soft King Mattress

    10 total reviews

    Regular price $1,358
    Sale price $1,358 Regular price $2,848
  • Elegance Firm King Mattress

    Elegance Firm King Mattress

    29 total reviews

    Regular price $1,498
    Sale price $1,498 Regular price $1,498
  • Elegance Medium King Mattress

    Elegance Medium King Mattress

    29 total reviews

    Regular price $1,498
    Sale price $1,498 Regular price $1,498
  • Urban Plush King Mattress

    Urban Plush King Mattress

    26 total reviews

    Regular price $1,547
    Sale price $1,547 Regular price $3,998
  • Urban Support King Mattress

    Urban Support King Mattress

    31 total reviews

    Regular price $1,547
    Sale price $1,547 Regular price $3,998
  • Cloud 7 Firm King Mattress

    Cloud 7 Firm King Mattress

    4 total reviews

    Regular price $1,616
    Sale price $1,616 Regular price $4,488
  • Cloud 7 Medium King Mattress

    Cloud 7 Medium King Mattress

    4 total reviews

    Regular price $1,616
    Sale price $1,616 Regular price $4,488
  • Urban Luxe Mattress Support King

    Urban Luxe Mattress Support King

    2 total reviews

    Regular price $1,818
    Sale price $1,818 Regular price $4,298
  • Urban Luxe Mattress Plush King

    Urban Luxe Mattress Plush King

    4 total reviews

    Regular price $1,818
    Sale price $1,818 Regular price $4,298
  • Saint Barth King Mattress 3.0

    Saint Barth King Mattress 3.0

    Regular price $2,672
    Sale price $2,672 Regular price $5,398

Let's Get You 100% COMFY

Take our mattress quiz to discover your perfect mattress match.

Types of King Mattresses

Our range of king mattresses helps you sleep comfortably and make every night's sleep a good night's sleep!

Different King Mattress Sizes

  • Standard King Mattress: Measures 1830mm x 2030mm and provides plenty of ample space for couples or individuals who prefer a large sleeping area.
  • Super King Mattress: The largest in our range, with dimensions of 2030mm x 2030mm. Ideal for those who require a lot of sleeping space.
  • King Single Mattress: 1070mm x 2030mm; perfect for children moving from a kids' bed or adults with smaller bedrooms.

Memory Foam Mattresses

Designed with your comfort in mind, our memory foam mattresses are the go-to choice for pressure-free sleeping. Say goodbye to tossing and turning, and hello to nights filled with restful slumber, for each memory foam mattress offers something special.

  • Gel foam mattresses: These memory foam mattresses incorporate cooling gel into the foam to help regulate temperature and promote a more relaxed sleep environment.
  • Eco foam mattresses: These mattresses are made from environmentally friendly materials and provide comfort while lowering your carbon footprint.
  • Premium foam mattresses: These mattresses combine high-density foam with layers of comfort foam for a luxurious sleep experience.

Innerspring Mattresses

Designed for temperature regulation, our inner-spring mattresses are a dream come true for hot sleepers looking for just the right fit. Say goodbye to those sweaty nights and hello to a cool, refreshing sleep experience like never before in your new innerspring king bed.

  • Micro spring mattresses: These mattresses feature smaller, more numerous springs for increased support and pressure relief.
  • Pocket spring mattresses: Each spring in these mattresses are individually wrapped, reducing motion transfer and providing targeted support.

Is a Super king-size mattress bigger than a king mattress?

Yes, a super king mattress size is larger than a standard king-size mattress. It measures 2030mm x 2030mm, providing even more space than the full king bed mattress's 1830mm x 2030mm standard dimensions.

Where can I buy a king-size mattress near me?

The best place to get a king full-size mattress is at OMF. Using our user-friendly online platform and mattress quiz, you can browse and buy your ideal king-size bed from the comfort of your home.

You can also visit one of our many stores. Our helpful staff is always available to help you find the best king mattress for your needs and budget, and take advantage of our exciting mattress offers!

Why choose one of our cOMFy mattresses?

All our products come with standard (comprehensive) warranties, which also provide you with our 30-night comfort exchange guarantee on all mattresses that are purchased with a mattress protector!

By choosing one of our full cOMFy ranges, you're not just buying a king mattress but investing in a high-quality, expertly recommended sleep solution.

If you want to buy a king size bed and mattress but have more questions, contact us!

We'd love to hear from you and assist you in any way we can.