Diagram showing Single sized SD Mach 2 Mattress dimensions.
Diagram showing Single sized SD Mach 2 Mattress dimensions.
Dimensions & Weight:
188 x 92 x 31cm
King Single
203 x 107 x 31cm
188 x 138 x 31cm
203 x 153 x 31cm
203 x 183 x 31cm
Super King
203 x 203 x 31cm

What's Inside

4 Precision Engineered Layers

  • Made from vortex spun bamboo yarn
  • Maximum breathability
  • Soft and silky to touch
  • Removable and washable
  • Made from high density AirGrown polyurethane foam
  • Creates a feeling of weightlessness
  • Porous and breathable
  • Level A Global Green Tag Certified Foam
  • Made from vortex spun bamboo yarn
  • Maximum breathability
  • Soft and silky to touch
  • Removable and washable
  • Made from high density AirGrown polyurethane foam
  • Creates a feeling of weightlessness
  • Porous and breathable
  • Level A Global Green Tag Certified Foam
  • Made from high density AirGrown polyurethane foam
  • Available initially in medium or firm
  • Level A Global Green Tag Certified Foam
  • Tailored support zones to suit specific parts of your body
  • Springs act entirely independently
  • Reinforced perimeter support
  • Made from twice tempered steel springs
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Global Green Tag Certified Foam

Our foams have been assessed to meet environmental, human health and ethical impact criteria.

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Country of Origin

Foams made in Australia, mattress assembled in China.

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10 year warranty

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We ship to most areas around Australia free of charge. Please confirm your location at checkout.

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100 Night Guarantee

Our mattress comes with a 100 Night Guarantee that includes free delivery, free firmness adjustments and free returns.


Which firmness should I start on?

At Sleeping Duck, we have two initial firmness options which you can choose from! We believe the firmness of your mattress is a very personal thing. It can depend on a range of factors such as a person's activity, body shape, weight and medical history. While we're not medical professionals, as a general rule of thumb from speaking to thousands of our customers we have some general starting recommendations.

Recommended for side sleepers or front sleepers, our Medium sinks in slightly and contours to your body shape, allowing for targeted support. It's designed to relieve common pressure points such as shoulders and hips. You will wake up feeling cosy and well rested.

Recommended for back sleepers or for those with back problems our Firm has a strong focus on providing overall support, while still providing an initial softness through our AntiGravity layer.

Recommended for couple that can't agree! Available on our Queen, King or Super King size, Half-Half is ideal for couples who have different firmness preferences. This means one sleeper side will be Medium and the other sleeper side Firm.

Still unsure? Get in touch with SDHQ and we can get you started!

Do you only offer Medium and Firm?

We also offer Soft and Extra Firm options which are custom made Precision Foam Pads available after purchase. You can adjust to these free of charge within your 100 Night Guarantee after trying your starting firmness for 21 nights.

Simply get in touch with SDHQ to organise your firmness adjustment.

How is the mattress packaged?

Our mattresses are compressed, vacuum sealed, rolled, and finally boxed for convenient travel. By using vacuum compression technology, we can reduce our mattress to one fifth of its standard thickness. For example, our King size mattress comes packed in a box approximately 200cm x 40cm x 40cm.

The springs in our mattress move independently. This means with the right equipment they can be compressed and rolled up without compromising performance or durability.

Once decompressed, the mattress will return to its original size and shape within 72 hours. Without the right equipment, attempting to fold or roll up an opened mattress will result in potentially permanent damage to the springs.

Does my Mattress come with a BreatheTech Cover?

Yes, all of our Mattresses are fitted with the standard BreatheTech Cover.

If you're interested in waterproof protection for your Duck, you can purchase the waterproof style of our BreatheTech Cover separately. We recommend having a spare handy for longevity and to maintain optimal hygiene.

You can find more information on our BreatheTech Cover recommendations here.

Can I use an electric blanket or mattress protector?

We've tested our mattress with electric blankets and can confirm that the heat won't affect the performance of our foams. That being said we always recommend exercising the appropriate caution that comes with operating an electric blanket.

A mattress protector can absolutely add that extra peace of mind and keep your mattress fresh for longer. If you do choose to use one, we recommend a breathable material such as TENCEL™ or bamboo. This will ensure the mattress continues to have the best air circulation for a cooler sleep.

Our BreatheTech sleep surface is washable, for those times where a mattress protector doesn't quite, well, protect. If washing doesn't quite get you the results you're looking for, you can always refresh your cover by purchasing a new one through SDHQ.

How do I clean the mattress?

Our Hybrid designed mattress is made up of four layers, each with their own cleaning recommendations.

Our BreatheTech Cover can be laundered in a washing machine on a warm gentle cycle, and tumble dried on a cool setting or line dried. To prevent fading or weather damage, we recommend against line drying for an extended period of time. If you find that the stains cannot be removed, or if it is damaged beyond repair, a new topper can be purchased separately.

Our AntiGravity cover, ComponentAdapt cover and Precision Foam Pad cover can be spot cleaned to remove spills or stains, or gently vacuumed using a handheld vacuum.

The Precision Foam Pads and the AntiGravity surface foam cannot be washed, and shouldn't be spot cleaned with anything wet. If they do get wet they should be patted dry or aired, out of direct sunlight, then vacuumed or brushed gently.

Please contact our team at SDHQ if you have any questions.

Can I purchase 2 Single size mattresses to make up a King size?

To exactly replicate the size of a King mattress, you would need to combine two Long Singles (not Singles).

A Long Single is the width of a Single mattress, with the length of a King mattress. If you were to use two Single mattresses, you'd find them much shorter than a King.

We do not make Long Single mattresses, however our Queen, King and Super King sizes allow Half-Half firmness configurations. This allows for each sleeper to customise the firmness of their side without having to compromise. Coupled with our AntiGravity foam and the multi-zoned pocket spring system, you shouldn't feel your partner move any more than two Long Singles together.

When can I get delivery?

For mattresses, bed bases, and frames, delivery options and times will vary depending on your area. You'll be advised of your delivery method during the checkout process, after providing your address.

For more information about our deliveries, we recommend reading our delivery FAQs.