King Mattress

King Mattress
Products

All Products
  • ACA Chiro Classic Limited Edition

    ACA Chiro Classic Limited Edition

    ACA Chiro Classic Limited Edition

    From
    $1,199
    $1,199

    Each layer in the ACA Chiro Classic has been carefully designed to help you achieve an amazing night’s sleep. Tested and endorsed by the Australian Chiropractors Association (ACA), this mattress will help relax your muscles and supportyour sleepin...

    SIZES AVAILABLE
  • ACA Chiro Adjustable Mattress Limited Edition

    ACA Chiro Adjustable Mattress Limited Edition

    ACA Chiro Adjustable Mattress Limited Edition

    From
    $1,999
    $1,999

    Tested and endorsed by the Australian Chiropractors Association (ACA), each layer in the ACA Chiro Adjustable mattress collection, has been carefully designed to help you achieve an amazing night’s sleep. You’ll be supported by the 5 zoned Active ...

    SIZES AVAILABLE
  • Stay Over Trundle Set

    Stay Over Trundle Set

    Stay Over Trundle Set

    From
    $1,999
    $1,999

    If you have ever been caught out with surprise overnight guests, our Stay Over Trundle may be the answer for you! No need to find pumps or pull out your vacuum cleaner to inflate a mattress, instead, you can Double your sleeping options by sliding...

    SIZES AVAILABLE
  • Flinders

    Flinders

    Flinders

    From
    $1,599
    $1,599

    A carefully curated sleep system that utilises the benefits of nature, you can relax on the Natures Touch Flinders collection. Experience a soft-to-touch wool blend pillow top sleep surface for cloud-like comfort. Designed to suit adjustable bases...

    SIZES AVAILABLE
  • Seoni

    Seoni

    Seoni

    From
    $1,199
    $1,199

    For a beautifully undisturbed night’s sleep, the Seoni collection encompasses a comfortable Pocket Spring technology for minimised partner disturbance. Climatex™ Quilt on the sleep surface creates breathability and minimised heat build-up, while t...

    SIZES AVAILABLE
  • Sports Performance Release

    Sports Performance Release

    Sports Performance Release

    From
    $1,999
    $1,999

    The Sports Performance Collection is available exclusively at Sleepy's and tested and endorsed by the Australian Chiropractors Association (ACA). The Sports Performance Release offers layers of high-quality Dunlop Foam treated with Ultra Fresh...

    SIZES AVAILABLE
  • Florentina

    Florentina

    sale

    Florentina

    From
    $1,399
    $1,399

    Discover Sleepy's Florentina Collection—a sleep solution combining Premium foams and support systems for rest at an Affordable price. Experience the flowering power of sleep! Each Florentina mattress has a 10-year warranty and can be paired wi...

    SIZES AVAILABLE
    sale
  • Sports Performance Resolve

    Sports Performance Resolve

    Sports Performance Resolve

    From
    $3,599
    $3,599

    The Sports Performance Resolve Collection is not limited to elite athletes; it is specifically designed to cater to anyone who experiences exhaustion at the end of their day and requires overnight rejuvenation waking ready to tackle the next day. ...

    SIZES AVAILABLE
  • River Element

    River Element

    River Element

    From
    $519
    $519

    The River Element Collection is an essential component of Sleepy’s introductory mattress range, meticulously designed to deliver comfort and value. Australian-made and enriched with Dunlop Foams treated with Ultra Fresh, this collection ensures a ...

    SIZES AVAILABLE
  • Bespoke Poppy Blue

    Bespoke Poppy Blue

    Bespoke Poppy Blue

    From
    $3,899
    $3,899

    Our Bespoke Poppy Blue has been made with high quality materials including damask fabrics on the top panel, cashmere fibre in the quilt to provide extra comfort and loft, copper infused memory Foam and KulKote layers allowing for the care culture ...

    SIZES AVAILABLE
  • Bespoke Orchid

    Bespoke Orchid

    Bespoke Orchid

    From
    $3,799
    $3,799

    The Bespoke Orchid Collection is a truly exceptional collection designed to provide a luxury sleeping experience, with function and aesthetic. Designed with Climatex Quilt, a sleep surface that incorporates Premium high-loft fibre between responsi...

    SIZES AVAILABLE
  • ecoBeach

    ecoBeach

    ecoBeach

    From
    $1,999
    $1,999

    Sleepy’s exclusive ecoBeach Collection is designed with the latest in eco-friendly materials to transmit a sense of calm. Encompassing the latest in natural materials, hemp fibres are utilised in the top panel with Climatex Quilt and wool undernea...

    SIZES AVAILABLE
  • ACA Valour

    ACA Valour

    ACA Valour

    From
    $3,999
    $3,999

    Indulge in the ultimate sleep experience with the ACA Valour Mattress, a creation of comfort and and proudly endorsed by the Australian Chiropractic Association, this mattress is designed to support you where you need it most. Sink into the layers...

    SIZES AVAILABLE
  • ACA Immerse

    ACA Immerse

    ACA Immerse

    From
    $2,999
    $2,999

    Sink into the dreamlike comfort of the ACA Immerse mattress, a Sleepy's exclusive mattress tested and endorsed by the Australian Chiropractors Association. Feel the gentle embrace of the Activesense 5-zone Pocket Spring system, which harmonise...

    SIZES AVAILABLE
  • Coast

    Coast

    Coast

    From
    $3,499
    $3,499

    Rediscover the joy of a great night's sleep with the Nature's Touch Coast Collection. This mattress blends the best of nature and innovation to provide you with nights of serene, restorative sleep. From the hypoallergenic natural latex to ...

    SIZES AVAILABLE
  • EKO

    EKO

    sale

    EKO

    From
    $4,999
    $4,999

    Delight in the exceptional comfort, support, and sustainability with Sleepy's exclusive Nature's Touch EKO range. This full Foam mattress is designed with health and wellness at its core, to cater to the modern sleeper's needs, incorpo...

    SIZES AVAILABLE
    sale
  • Nullarbor

    Nullarbor

    Nullarbor

    From
    $2,599
    $2,599

    Introducing the Nullarbor collection, a creation inspired by the tranquil beauty of the Nullarbor Plains. With its thoughtfully designed features and commitment to quality, this mattress offers exceptional comfort and support, ensuring a restful n...

    SIZES AVAILABLE
  • Cove

    Cove

    Cove

    From
    $849
    $849

    Sleep made simple. The Cove mattress offers the perfect mix of comfort and support to help you get the restful sleep you deserve. With three feel options—plush, medium, and firm—the Cove mattress is designed to suit your personal preferences and e...

    SIZES AVAILABLE
  • Zephyr

    Zephyr

    Zephyr

    From
    $1,299
    $1,299

    Experience restful sleep with the Zephyr mattress, designed to deliver balanced, full-body support night after night. Featuring a continuous coil spring unit, the Zephyr offers even weight distribution from head to toe. Its durable Miracoil Classi...

    SIZES AVAILABLE
  • ACA Muse

    ACA Muse

    ACA Muse

    From
    $1,599
    $1,599

    The ACA Muse collection, developed by SleepMaker and Sleepy’s in partnership with the Australian Chiropractors Association (ACA), is designed to prioritise postural alignment, muscle relaxation, and full-body support. With the innovative 5-zoned M...

    SIZES AVAILABLE
  • ACA Era

    ACA Era

    ACA Era

    From
    $2,699
    $2,699

    Enhance your sleep with the ACA Era mattress, designed to offer support where you need it most. The Miracoil Advance Spring System provides support to assist with alignment for your back and body. This mattress contains temperature regulating feat...

    SIZES AVAILABLE

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.