King Size Mattresses

What are the dimensions of a king size mattress?

A standard king size mattress measures 5ft wide x 6ft 6in long (150cm x 200cm). That’s plenty of room for couples—or solo sleepers who love some serious starfish space. If you’re after something even roomier, check out our super king options!

What’s the best king size mattress for me?

The best king size mattress depends on how you sleep. Here’s a quick breakdown of the mattress types we offer:

• King size memory foam mattresses – A king size memory foam mattress provides body-contouring comfort and pressure relief.
• King size pocket sprung mattresses – If you’re looking for supportive springs that work independently to minimise movement transfer, a king size pocket sprung mattress could be ideal.
• King size hybrid mattresses – Access the best of both worlds: spring support + foam or gel comfort.
• King size latex mattresses – Naturally cooling and hypoallergenic – a great choice for allergy sufferers and hot sleepers alike.
• King size iGel mattresses – Cooling mattresses with breathable support that adapts as you move.
• King size mattresses with natural and eco-conscious fillings – Mattresses made from wool, cotton, and other breathable or sustainable materials.
• King size open coil (traditional spring) mattresses – Tried-and-true comfort at great value.

Not sure where to start? Try our in-store SleepPRO® system to get matched to your ideal mattress in minutes.

What firmness levels can I choose from?

We offer every firmness rating to suit your sleep style:

• King size soft mattresses – Cushioned comfort for lighter bodies and side sleepers.
• King size medium mattresses – Balanced support with gentle pressure relief; ideal for most sleepers.
• Firm king size mattresses – A firm mattress is great for back or front sleepers who need extra support.
• King size extra firm mattresses – Maximum support, often preferred by those with back pain or heavier body types.

Can I recycle my old king size mattress?

Yes, we’ll take care of it! Our mattress recycling service allows you to say goodbye to your old mattress responsibly. Our team will collect it during your delivery and ensure it’s recycled properly, clearing the way for your brand-new bed.

Do you sell king size mattress toppers and protectors?

We do! Add an extra layer of comfort and care to your new mattress with one of our king size mattress toppers. A mattress topper is perfect for softening a firm mattress or extending the life of an older one.

And king size mattress protectors are a must in our books. Having one adds an extra layer of protection for your mattress, helping to shield it from spills, allergens, and wear, keeping it fresher for longer.

Can I buy a king size mattress with a matching bed?

Yes! Explore our collection of king size beds with mattresses – including divan sets, upholstered frames, and adjustable beds – all perfectly paired for style and support.

Which brands offer king size mattresses at Bensons?

At Bensons, you’ll find top sleep brands including:

• Simba
• TEMPUR®
• Sealy
• Slumberland
• Staples & Co
• iGel

Each brand offers a unique blend of comfort technologies and premium materials, ensuring that you can find a king mattress that truly suits your needs.

Do king size mattresses come with a warranty?

Absolutely. Every king size mattress comes with:

• Our 40-Night Comfort Guarantee – swap it if it’s not quite right. Terms & conditions apply.
• A minimum 5-year warranty, and up to 10 years on selected models.

So you can sleep with confidence, night after night.

Need a hand choosing the right mattress? Our in-store sleep experts are always happy to help — or shop online now to explore our full king size collection.