King Mattress

King Mattress

King Mattresses

Big on space, big on comfort, a king mattress is made for couples that like room to roam, co-sleeping families or solo sleepers living their best starfish life. At Sleepy’s, we believe the power of sleep reigns supreme, keeping your battery fully charged so you never have to live with 10% remaining. Our Sleepy’s sleep experts are here to help you find your perfect mattress match, so you can rest deep and live large.

Find your future king today.

Discover the King Difference

At a vast 183 x 203cm, a king bed mattress gives you the extra space you didn’t know you couldn’t live without. Ideal for couples with individual needs, parents with mini midnight visitors or anyone who believes that they should sleep like royalty.

 

But sleep isn’t a one-size-fits-all, and that’s where we come in. We'll match you with a king who rules your world. From firm and supportive to soft and squishy, and somewhere in between, we have a king-size feel for every sleep style, snuggle habit and spinal preference.

Meet your match by taking our Find Your Mattress quiz.

Shop by Comfort & Feel

Plush King Mattresses

Soft, cloud-like, and utterly indulgent, this is sleep with a side of “cancel my morning plans”. A plush king mattress is heaven for side-sleepers, loungers and those who like the luxurious side of life, blending responsive support with dreamy comfort layers.

Medium King Mattresses

The crowd-pleaser. A medium king bed mattress is beautifully balanced, firm enough for support, soft enough to snuggle down and diplomatic enough to keep the fussiest couple happy.

Firm King Mattresses 

Firm where it counts, comfy where it matters, a firm king mattress is perfect for supporting spinal alignment with minimal sink. Ideal for back and tummy sleepers, a firm mattress is for those who take their sleep like their coffee: strong and helpful.

Shop by Brand

SleepMaker

Sleepmaker has been making rest-revolutionising mattresses for over 85 years. They’re pros at combining innovative support systems with dreamy comfort layers, and when it comes to mattress quality, SleepMaker has it all stitched up. Sleepy’s exclusive Chiro range is made with our friends at SleepMaker, the only mattress range approved by the Australian Chiropractic Association for spine-loving support.

Natures Touch 

Natures Touch are the minimalists, the naturalists and the deep-sleep romantics. Made with organic latex, natural fibres and supportive layers that breathe beautifully, these Australian-made king mattresses are all about simple comforts.

Mlily

Mlily is all about that memory foam magic. These mattresses are designed to contour to your shape, offering the ultimate in conformance and pressure relief. They also offer a king bed mattress in hybrid form, combining premium memory foam with coil support, like the power couple they are. 

Why Choose Sleepy’s?

At Sleepy’s, we’re in the business of helping Australians reclaim their energy, their sparkle, their bounce-out-of-bed selves, through expert-backed, feel-good sleep. Whether you sleep hot, sleep like chaos or need extra spinal support, our team of Sleepy’s sleep experts are trained to match you with the perfect mattress so you can get back to being your amazing.

We’re also the proud home of the only Chiro mattress range with the nod of approval from the Australian Chiropractors Association. That means real support for your back. When it comes time to buy a king mattress, we’ll collect your old one and provide a 60-night comfort guarantee to make sure it's true love.

Frequently Asked Questions

What are the dimensions of a king mattress in Australia?

A standard Australian king mattress is 183cm wide x 203cm long. Translation? Glorious, sprawling space for two adults, a toddler who drifts from their own bed, and maybe even the family cat.

Is a king-size mattress suitable for two adults?

It certainly is. A king-size mattress gives a couple room to dream dramatically, snooze and stretch out without a rogue elbow to the ribs. It’s the ideal size if one of you likes to sleep in a star shape.


How do I buy a king mattress online at Sleepy’s?

It’s so easy. To buy a king mattress online, take our Mattress Finder Quiz to help narrow down your search, choose your feel, filter to king size, then add to cart! As soon as you’ve completed the purchase, we’ll get your mattress moving.

What’s the difference between a king and a super king mattress?

A super king mattress gives you an extra 20cm of width (203cm vs 183cm). Super king is for those who want to live the life of luxury with some serious stretch-out room. A king mattress is spacious. A super king has sprawling goals.

Are there sales, trials, or guarantees on king mattresses?

Yes, glad you asked. We offer a 60-night comfort exchange guarantee, fast delivery and mattress removal if you're saying goodbye to your old one. Plus, you can keep an eye out for a king mattress sale by joining our mailing list so you can get notified of any promotions.