King Mattresses

Discover the comfort of a king mattress

Looking to upgrade your sleep space? A king mattress offers the ultimate in comfort and room to move, whether you're stretching out solo or sharing with a partner. With more surface area than any other standard bed size, a king size mattress brings luxury and space into your bedroom, transforming it into a true retreat.

How to choose the right king sized mattress for your bed and how you sleep

Choosing the right king bed mattress starts with how you sleep. Are you a side sleeper needing cushioning support, or do you prefer a firmer surface for spinal alignment? Your sleep style will help guide whether you should consider a memory foam, innerspring, or pocket spring option.

Memory foam mattresses are known for contouring comfort and reduced motion transfer, perfect if your partner tends to toss and turn. Explore our memory foam mattress range for a mattress style that cleverly moulds to your body. Prefer bounce and airflow? Innerspring mattresses offer a traditional feel with great breathability. Pocket spring mattresses feature coil springs that are individually wrapped in pockets of fabric for structure and  targeted support, which is ideal for couples with different sleep preferences.

Don’t forget your bed base. A king mattress pairs perfectly with our selection of king beds, or opt for a complete bedroom set for a cohesive look.

Different king mattress material and construction types, and their pros and cons

Here’s a breakdown of popular mattress types to help you find your perfect fit:

Memory foam

Pros: Exceptional pressure relief, reduces partner disturbance

Cons: May retain heat, heavier to move

Pocket spring

Pros: Zoned support, minimal motion transfer, breathable

Cons: Typically higher in cost

Innerspring

Pros: Excellent airflow, responsive feel

Cons: Can wear quicker without adequate rotation

Mattress-in-a-box

Pros: Convenient delivery, easy setup, available across all comfort levels and a range of material options

Cons: May take a few days to fully expand

To scope out your mattress upgrade, browse our mattress-in-a-box collection for easy delivery and fast comfort. No matter the construction, our full mattress collection has options to suit every sleep style and budget.

Caring for and maintaining your king sized mattress for long term comfort

A quality king mattress is an investment in your wellbeing. To make it last:

Rotate regularly: Every 2-3 months helps prevent uneven wear

Use a mattress protector: Keeps stains and allergens at bay

Air it out: Occasionally remove bedding to allow airflow

Vacuum gently: Removes dust and helps maintain freshness

These simple steps can help extend the lifespan of your king size mattress and keep it comfortable for years to come.

How to check if your room has enough space for a king sized mattress and bed base

A king bed mattress measures approximately 183cm wide by 203cm long. Before you buy, it's important to check your room’s layout. Here’s how:

Measure your room: Ideally, allow at least 70cm of space on each side of the bed to move comfortably

Visualise with painter’s tape: Mark out the size on your floor to get a sense of how it fits

Consider your furniture: Account for bedside tables, dressers, or any other bedroom furniture you plan to include

Short on space? A king mattress can still work in smaller apartments or compact main bedrooms with clever furniture placement or by selecting low-profile storage beds.

Frequently Asked Questions

How firm should a king mattress be?

This depends on personal preference. Side sleepers may prefer medium or plush, while back or stomach sleepers often choose medium-firm to firm options.

Can I use a king mattress on a queen base?

No, a king mattress is wider than a queen and needs a properly sized base to provide support and avoid damaging the mattress.

Are mattress-in-a-box options as good as traditional mattresses?

Yes. Many mattress-in-a-box models use the same high-quality materials as traditional mattresses, with the added bonus of easier delivery and setup.

Explore our wide selection of mattresses and find the perfect fit for your sleep style, space, and lifestyle.