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:quality(90)/https://www.sleepsolutions.com.au/media/catalog/product/m/a/mattress-topper.jpg "Bianca Relax Right 1000 gsm Mattress Topper")
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:quality(90)/https://www.sleepsolutions.com.au/media/catalog/product/l/u/luxury-1000gsm-bamboo-and-microfibre-mattress-topper.jpg "Luxury 1000GSM Bamboo and Microfibre Mattress Topper")
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:quality(90)/https://www.sleepsolutions.com.au/media/catalog/product/b/a/bambi-superior-comfort-mattress-topper-1000-gsm-lifestyle-3.jpg "Bambi Superior Comfort Mattress Topper 1000 gsm Lifestyle 2")
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:quality(90)/https://www.sleepsolutions.com.au/media/catalog/product/d/o/downia-heavenly.jpg "Downia Heavenly Duck Down Mattress Topper Underlay Side")
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Sleep Solutions
4.8
(1029 reviews)
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What people are saying
5 | 87% | |
4 | 8% | |
3 | 2% | |
2 | 1% | |
1 | 2% |
L
Excellent product, excellent customer service and very fast delivery. I will say, however, that I find the headhand too hot at the moment. This can't really be helped. But if you tend to run hot or get hot flushes, consider this.
We couldn't believe how fast the electric blankets got here from Sydney. Just 3 days by Australia post to Toowoomba. The products have all the features we wanted as well.
M
They were very helpful when placing an NDIS order and fast.
K
Found the website easy to use and order what I needed Delivery was very quick Will be ordering again
A
Was very keen to try this but so hard to as hubby not like it. Tried with earplugs but the cable was annoying
A
Have been travelling with the pillow and highly recommend
W
I was unsure how this product would work but have been amazed at the change in my breathing/sleeping pattern. So thank you Sleep Solutions I am thrilled with this air purifier and the speed in which it was delivered to me.
J
Great service and quick delivery. Range of Mack's earplugs you can't get in stores here. The ultra soft ones are the winner.
Super King Mattress Topper Guide
The complete Australian guide to super king toppers — protecting your largest bedroom investment and restoring 5-star resort comfort at a fraction of replacement cost.
Expansive Luxury and Uncompromised Support
At 204 cm x 204 cm, the super king is Australia's largest standard mattress size — and one of the most significant investments you can make in your bedroom. Replacing a super king mattress is genuinely expensive, which makes a premium super king topper one of the smartest value decisions available to owners of this size. A quality topper can restore the feel of a brand-new bed in a single evening, extending your mattress life by years.
The super king's unique square dimensions also present specific challenges that smaller beds don't face — particularly around temperature regulation across the large surface area, and edge-to-edge coverage that needs to reach every corner without bunching or slipping. Our super king range is selected with these challenges in mind, ensuring a precise, secure fit across the full 204 x 204 cm surface.
Three Things a Super King Topper Does Exceptionally Well
The super king's sheer size creates specific comfort challenges. Here's where a quality topper makes the biggest difference on this size bed.
Edge-to-Edge Comfort Across Every Centimetre
On a super king bed, you have significantly more sleeping space than any other standard size — and that space only delivers its full value if the comfort is consistent from the centre all the way out to every edge. Mattresses that age unevenly, develop soft spots, or feel noticeably firmer near the edges diminish that space in practice, leaving sleepers instinctively gravitating back toward the centre.
A super king topper creates a single, unbroken plane of consistent comfort across the full 204 x 204 cm surface — no matter how much you roll, stretch, or change position during the night. Premium toppers with deep, fully elasticised skirts hold this coverage securely at every corner, ensuring the topper doesn't shift or bunch even on the large surface area. For a bed this size, a properly fitted topper transforms sprawling space into genuinely usable, comfortable space.
Advanced Temperature Regulation Across the Full Surface
The super king's substantial surface area — over 0.4 square metres larger than a standard queen — means there is significantly more mattress material trapping and retaining heat beneath two sleeping bodies. On warm Australian nights, this can create a noticeably warmer sleep environment than smaller beds, particularly if the base mattress is a dense foam type with limited natural breathability.
A breathable natural-fibre topper or a bamboo-cover option actively improves airflow across the entire surface, drawing heat and moisture away from both sleepers simultaneously. Wool underlays are particularly effective on super king beds in variable climates — regulating temperature in both directions so one partner isn't kicking off the covers while the other reaches for an extra blanket. For couples sharing a super king in Queensland, the Northern Territory, or during a hot Australian summer anywhere, cooling breathability isn't a luxury — it's a practical necessity.
Ultimate Pressure Relief & Spinal Support
Super king mattresses are often found in master bedrooms where couples have prioritised space and luxury — but even the most premium mattress eventually loses its initial support profile. When the surface hardens or subtly dips, the consequences show up as morning stiffness, lower back ache, and pressure point soreness at the hips and shoulders that's difficult to identify as mattress-related because the decline happens gradually.
A memory foam topper restores active pressure relief across every inch of the super king surface. The foam contours precisely to each sleeper's individual body shape — redistributing weight away from peak pressure points and filling the subtle gap between the lower back and mattress that causes the most common overnight discomfort. On a super king where two people occupy distinct halves of the bed, a quality foam topper ensures both sides deliver the same level of support regardless of body weight or sleeping position.
Understanding the Super King's Unique Dimensions
The super king has one characteristic that distinguishes it from every other standard Australian bed size: it's perfectly square. This matters when you're buying a topper.
204x204
Super King (cm)
★ Square
≠
183x203
King (cm)
Rectangular
Don't confuse king with super king
A king topper (183 x 203 cm) is 21 cm narrower than a super king mattress. It will not cover the full width and will leave a visible uncovered strip on one side. Always verify your mattress dimensions and order the correct super king (204 x 204 cm) size — the two sizes are not interchangeable.
Choosing Your Super King Topper Material
Every material works in super king — the right choice depends on what you need your topper to do. Here's a straightforward guide to the four most popular options for this size.
Best for Support & Motion Isolation
Memory Foam
The top choice for couples needing pressure relief, back support, or reduced motion transfer on a super king. Memory foam contours to individual body shapes across each half of the bed, isolating movement and providing targeted spinal support. Gel-infused versions address heat retention across the large surface area.
- Best motion isolation — each side of the bed feels independent
- Excellent for back, hip, and shoulder pain relief
- Gel-infused options for hot sleepers on a large surface
- Browse Memory Foam Super King Toppers →
Cooling & Hypoallergenic
Bamboo
The standout choice for hot sleepers and couples in warmer Australian climates. Bamboo's moisture-wicking properties are particularly valuable on a super king's large surface, actively cooling the sleep environment across the full 204 x 204 cm rather than allowing heat to accumulate. Bamboo memory foam options combine cooling breathability with structural support.
- Most effective cooling across the super king's large surface
- Naturally hypoallergenic and antibacterial
- Bamboo memory foam combines cooling with pressure relief
- Browse Bamboo Super King Toppers →
Luxury & Hotel Feel
Feather & Down
For super king owners who want their bed to feel like the finest hotel suite, a goose or duck feather and down topper delivers the signature cloud-like loft and enveloping softness that no synthetic material fully replicates. The natural breathability of down is particularly well-suited to the large surface area, avoiding the heat build-up that denser materials can create.
- Unmatched cloud-like softness and luxury loft
- Naturally breathable — comfortable across all seasons
- Not suitable for feather allergy sufferers
- Browse Feather & Down Super King Toppers →
Natural & Year-Round
Wool Underlay
A super king wool underlay is a particularly smart choice for couples with different temperature preferences — wool's dual-direction temperature regulation works equally across both halves of the large bed, keeping each sleeper comfortable without requiring a separate solution for each side. Naturally hypoallergenic and dust mite resistant, it also provides gentle, all-over pressure relief.
- Year-round temperature regulation for couples with different preferences
- Naturally hypoallergenic and dust mite resistant
- Soft, consistent pressure relief across the full surface
- Browse Wool Super King Underlays →
Super King vs Other Australian Bed Sizes
The super king sits at the very top of the standard Australian size range. Here's the full picture — and the key measurements to keep in mind when ordering.
| Size | Width | Length | Notes |
|---|---|---|---|
| Single | 92 cm | 188 cm | Standard children's and single adult size |
| Long Single | 92 cm | 203 cm | Adjustable bed configurations (split king) |
| King Single | 107 cm | 203 cm | Wider single — popular adult upgrade |
| Double | 138 cm | 188 cm | Compact couples size |
| Queen | 153 cm | 203 cm | Most popular couples size in Australia |
| King | 183 cm | 203 cm | Australia's most common large size — 21 cm narrower than super king |
| Super King ★ | 204 cm | 204 cm | Australia's largest standard size — uniquely square; maximum luxury space |
The super king's square shape is unique — don't order the wrong size
The super king is the only standard Australian bed size where width and length are identical (204 x 204 cm). A king topper (183 x 203 cm) will not fit — it's 21 cm too narrow. If your retailer or brand lists dimensions as 200 x 200 cm, verify whether that's the actual super king or a slightly smaller custom size before ordering your topper.
Find Your Super King Topper
Browse our full super king range across every material — memory foam, wool, bamboo, feather and down, and microfibre. Not sure which is right for your situation? Our Australian sleep experts are happy to help you choose.
National Disability Insurance Scheme
Sleep Solutions is a registered NDIS provider
Sleep Solutions is registered as a provider with the NDIS
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Frequently Asked Questions
What size is a super king mattress topper in Australia?
An Australian super king mattress topper measures 204 cm x 204 cm. This is wider and longer than a standard king (183 x 203 cm). Super king toppers are less commonly stocked than other sizes, so check availability before purchasing.
What is the best super king mattress topper?
Memory foam toppers offer the best support and pressure relief in super king. Bamboo toppers are ideal if you sleep hot. Feather and down toppers provide the most luxurious feel. Choose based on whether you prioritise support, cooling, or plushness.