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King Size Mattress

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King Size Mattress: Experience Unmatched Space, Comfort, and Luxury in Every Australian Bedroom

Welcome to the King Size Mattress collection at During Days—Australia’s trusted destination for premium sleep solutions. If you’re seeking the ultimate in space, comfort, and support for your master bedroom or guest suite, our range of king size mattresses is designed to deliver a truly luxurious sleep experience.

A standard king size mattress Australia measures approximately 183.5 cm wide by 203 cm long, making it one of the most popular and spacious options for couples, families, and anyone who values room to stretch out and relax. Whether you’re upgrading your main bed, accommodating kids or pets, or simply want to enjoy undisturbed sleep, a king mattress is the perfect choice. Our collection spans the latest in sleep technology—from plush memory foam and advanced pocket springs to hybrid mattresses and eco-friendly materials.

At During Days, we make it easy to buy king size mattress online with a wide variety of trusted brands, comfort levels, and price points. Discover why Australians choose us for the best king size mattresses and enjoy a better night’s sleep, every night.

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Why Shop with During Days?

When you choose During Days for your king size mattress, you’re choosing quality, value, and a seamless shopping experience from an Aussie-owned business that understands your needs.

  • Premium Selection: Our range features only the highest quality king mattresses from trusted Australian and international brands. Every mattress is chosen for its comfort, durability, and advanced sleep technology.

  • Aussie-Owned & Operated: Our local team knows what Australian sleepers need, ensuring our king size mattresses Australia meet the highest standards for comfort and support.

  • Fast, Reliable Shipping: Enjoy prompt dispatch and Australia-wide delivery, so your new king size mattress arrives quickly and securely.

  • Expert Support: Our knowledgeable staff are always ready to help, whether you need advice on choosing the right memory foam king mattress or tips for mattress care.

  • Secure Shopping: Shop confidently with secure checkout and privacy protection for your personal and payment information.

  • Customer Satisfaction: Thousands of happy customers trust During Days for their bedding upgrades and sleep essentials.

With During Days, you’re not just buying a king size mattress—you’re investing in better sleep, better mornings, and long-term value.

Shop by Budget

Finding the right king size mattress for your home is easy at During Days, no matter your budget. Our collection includes memory foam king mattresses, hybrid king size mattresses, and pocket spring king mattresses at every price point.

Under $700

Perfect for budget-conscious shoppers, guest rooms, or rental properties, this range includes affordable king mattresses, basic innerspring king size mattresses, and entry-level foam options. These mattresses are ideal for occasional use, delivering reliable comfort and easy setup.

$700–$1,500

Our mid-range selection features memory foam king mattresses, hybrid king size mattresses, and advanced pocket spring king mattresses with enhanced support, pressure relief, and cooling features. These products are perfect for everyday use in family homes, master bedrooms, or couples’ spaces.

$1,500 and Above

For those seeking luxury and innovation, explore our premium collection of designer king size mattresses, high-end memory foam king mattresses, and advanced hybrid king size mattresses. Expect features like zoned support, gel-infused cooling, plush Euro tops, and eco-friendly materials. These options are ideal for luxury homes or anyone wanting a true sleep sanctuary.

No matter your budget, you’ll find the perfect king size mattress at During Days to suit your sleep style, space, and needs.

Best Use Cases

A king size mattress is the ultimate choice for those who value space, comfort, and quality sleep. Here’s how our range of king mattresses, including memory foam king mattresses and hybrid king size mattresses, can transform your nights:

  • Master Bedrooms: Enjoy ample space for couples, with enough room to stretch out, move freely, and minimise partner disturbance. The extra width is perfect for those who want a luxurious, undisturbed sleep experience.

  • Families & Co-Sleeping: A king size mattress is ideal for families with young children or pets who share the bed, providing enough space for everyone to sleep comfortably together.

  • Taller Individuals: The generous length and width of a king mattress ensure that even the tallest sleepers can stretch out without their feet hanging off the edge.

  • Luxury Guest Suites: Impress your guests with a luxury king size mattress that combines comfort, support, and easy maintenance. Opt for a medium feel king mattress to suit a variety of sleep preferences.

  • Health & Wellness: The spacious surface of a king size mattress allows for optimal spinal alignment, reduced pressure points, and improved circulation, contributing to better sleep quality and overall health.

Complete your sleep upgrade with a mattress topper for added plushness, or pair your new king size mattress with a supportive bed base and luxury bedding. For a full bedroom transformation, consider adding pillows, quilts, and bedroom furniture.

Related Categories

Double Mattress

Upgrade to a double mattress for couples, older teens, or guest rooms needing extra width and comfort.

King Single Mattress

Choose a king single mattress for growing teens, solo adults, or guest rooms where extra length and width are welcome.

Mattress Toppers

Add an extra layer of comfort and protection with our premium mattress toppers, available in memory foam, latex, and plush quilted styles.

Queen Mattress

Discover our collection of queen mattresses—Australia’s favourite size for couples and master bedrooms.

Single Mattress

Shop our range of single mattresses for kids’ rooms, guest spaces, and compact bedrooms, with options for every comfort preference.

Trust & Satisfaction Guaranteed

Your satisfaction is our top priority at During Days. Every king size mattress is backed by our 14-day money-back guarantee, giving you peace of mind with every purchase. Enjoy fast, Australia-wide shipping and responsive customer support from our local team. Thousands of Australians trust us for quality, value, and service—experience the During Days difference today.

Ready to experience the ultimate in sleep comfort? Shop our collection of king size mattresses now and discover the perfect blend of luxury, support, and value—delivered fast, Australia-wide. With trusted Aussie service, secure checkout, and a satisfaction guarantee, there’s never been a better time to find the right king mattress for your home. Sleep better and wake refreshed with During Days.

Frequently Asked Questions (FAQS)

What is the size of a king size mattress in Australia?

A standard king size mattress Australia measures approximately 183.5 cm wide by 203 cm long, making it the second largest mattress size available and a popular choice for couples and families.

How does a king size mattress compare to a queen or super king?

A king size mattress is the same length as a queen (203 cm) but is 30 cm wider, providing extra space for couples or families. A super king is even wider at 203 cm by 203 cm, offering the most space available.

Are king size mattresses suitable for couples and families?

Yes, the generous width of a king mattress is perfect for couples who want more space or for families who co-sleep with children or pets.

What types of king size mattresses are available at During Days?

We offer a wide range of king size mattresses, including memory foam king mattresses, hybrid king size mattresses, pocket spring king mattresses, and eco-friendly options to suit every preference.

How do I choose the best king size mattress for my needs?

Consider your preferred sleep position, firmness level, and any specific needs such as pressure relief or cooling technology. Memory foam king mattresses offer contouring support, while hybrid king size mattresses combine springs and foam for balanced comfort and support.

Are your king size mattresses hypoallergenic?

Many of our king size mattresses feature hypoallergenic materials and dust mite resistance, making them suitable for allergy sufferers. Check product descriptions for specific features.

How quickly will my king size mattress be delivered?

Most orders are dispatched within 2–3 business days, with delivery times depending on your location. You’ll receive tracking information once your order ships.

What is your returns policy?

We offer a 14-day money-back guarantee. If you’re not satisfied, contact our customer service team for return instructions. Items must be returned in original condition with all accessories.

Do your king size mattresses come with a warranty?

Yes, all our king size mattresses are backed by a manufacturer’s warranty. Details vary by product, so check the product description or contact us for more information.

Can I try the mattress before I buy?

While we don’t offer in-store trials, our detailed product descriptions, customer reviews, and risk-free returns policy make it easy to choose with confidence.

Are your mattresses suitable for all bed bases?

Yes, our king size mattresses are compatible with most standard bed bases, including slatted, platform, and ensemble bases. For best results, ensure your base is supportive and in good condition.

Do you offer delivery Australia-wide?

Yes, we deliver king size mattresses Australia wide, with fast, reliable shipping to metro and regional areas.

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