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Top3 Mattress compares mattresses sold in Australia, and we make our money when a reader buys through one of our links. Brands pay us advertising and referral fees, and those arrangements affect which mattresses we cover and how high they sit in our rankings. Some mattresses here have no arrangement with us at all.

Every mattress is scored against the same ten published criteria, and each of the ten scores is shown alongside the total. What those criteria measure, and how the total is set, are laid out on our How we rate page. The work behind the scores is desk work: we read published specifications, warranty documents and trial terms, and cross-check them against each manufacturer's own pages. We do not buy these mattresses and sleep on them, and no score here comes from in-home testing.

We do not cover every mattress sold in Australia, and the ones we can earn a commission on are more likely to be among the ones we do cover. Prices, trial lengths and warranty terms change without notice, so check the brand's own page before you buy. A ranking here is not a guarantee about a product and not an endorsement of it. Our full terms are set out in the Terms of use.

Head to head

Onebed vs Sleeping Duck

Both are built to be re-tuned rather than returned. Sleeping Duck is a taller spring hybrid with the wider set of options — medium, firm, or different on each side. Onebed is all-foam, cheaper to get into, with two settings, the longer trial, no minimum stay, and a 20 mm sagging threshold in the warranty. Sleeping Duck also limits which bases you may use.

Direct Verdict & Recommendation Answer-First Comparison

The Short Answer: Which mattress should you choose?

Both are built to be re-tuned rather than returned. Sleeping Duck is a taller spring hybrid with the wider set of options — medium, firm, or different on each side. Onebed is all-foam, cheaper to get into, with two settings, the longer trial, no minimum stay, and a 20 mm sagging threshold in the warranty. Sleeping Duck also limits which bases you may use.

  • Price Advantage: Onebed starts lower at From $679.
  • Cooling & Airflow: Sleeping Duck leads cooling with a score of 8.4/10.
  • Trial Guarantee: Onebed gives 125 nights vs Sleeping Duck with 100 nights.

Key differences at a glance

Build & Feel

Construction & Alignment

Onebed: All-foam (Memory Foam + Auralux) (Adjustable — Medium / Medium-firm)

Sleeping Duck: Hybrid (Pocket Spring + Foam) (Adjustable — Medium / Firm / Half-half)

Comfort Scores

Cooling & Motion Transfer

Onebed: Cooling 7.8/10, Motion 9.3/10

Sleeping Duck: Cooling 8.4/10, Motion 8.7/10

Purchase Terms

Trial, Price & Warranty

Onebed: From $679 · 125 nights trial · 10 years warranty

Sleeping Duck: From $999 · 100 nights trial · 10 years warranty

The differences that matter

Onebed compared with Sleeping Duck
Specification Onebed Sleeping Duck
Entry price From $679 (better of the two) From $999
Sleep trial 125 nights (better of the two) 100 nights
Warranty 10 years 10 years
Overall score 9.5 (better of the two) 9.1
Cooling score 7.8/10 8.4/10 (better of the two)
Motion isolation score 9.3/10 (better of the two) 8.7/10
Edge support score 7.6/10 9/10 (better of the two)
Firmness Adjustable — Medium / Medium-firm Adjustable — Medium / Firm / Half-half
Construction All-foam (Memory Foam + Auralux) Hybrid (Pocket Spring + Foam)
Height / Profile 28 cm 31 cm
Key materials Tencel cover, Gel-infused memory foam, Auralux foam, 5-zone high-density support base Twice-tempered steel pocket springs, High-density AirGrown polyurethane foams, BreatheTech knitted bamboo cover
Delivery & returns Free Australia-wide (some rural exclusions) Free next business day · most metro, some regional

Scores, pricing, trials and warranties highlight the category leader. Firmness, materials and profile dimensions are listed as individual sleeping preferences rather than absolute winners.

Final recommendation: Which one is right for you?

These two suit different sleepers. Use the criteria below to match your body type, sleeping position and temperature needs to the right choice.

Choose Onebed if…

You want the lower price, a longer trial, or you have a sprung or adjustable base.

Check Onebed price

Choose Sleeping Duck if…

You want split firmness for two people, or the taller spring build.

Check Sleeping Duck price

Pros and cons, side by side

Onebed

Pros

  • The 125-night trial has no minimum stay — you can return it in week one
  • Sagging is covered from 20 mm — a shallow threshold, and one Onebed actually publishes
  • Firmness changes by unzipping the cover and flipping the top layers, not by moving the whole mattress
  • Carries both OEKO-TEX and CertiPUR-US certification

Cons

  • All-foam, so there is no spring layer for edge support or airflow
  • Free delivery carries an asterisk — the site says it may not be available for some rural and remote areas, without saying what it costs instead
  • Only two firmness settings — medium and medium-firm, with nothing firmer
  • The instalment amounts are shown but the provider is never named

Sleeping Duck

Pros

  • Each side can be a different firmness, and a half-half queen costs the same as a single-firmness one
  • Firmness is changed by swapping foam pads at home — free and unlimited during the 100 nights, in soft, medium, firm or extra firm
  • The cover and both foam layers lift out and can be replaced individually, so one worn part does not mean a new mattress
  • A perimeter zone of high-strength steel springs, so the edge holds when you sit on it

Cons

  • A queen is $1,649
  • A 100-night guarantee, the same as Ecosa and shorter than Newentor, Koala, Origin, Onebed and Emma; returns are capped at two mattresses per household
  • Putting it on a sprung or adjustable base voids the 10-year warranty, as do slats more than 12 cm apart
  • The warranty sets a 140 kg limit per sleeper and only counts sagging deeper than 30 mm as a defect

Onebed vs Sleeping Duck: Frequently Asked Questions

Is Onebed or Sleeping Duck better for back support and spinal alignment?

Onebed: All-foam (Memory Foam + Auralux), firmness Adjustable — Medium / Medium-firm. Sleeping Duck: Hybrid (Pocket Spring + Foam), firmness Adjustable — Medium / Firm / Half-half. As a general rule, zoned pocket-spring hybrids push back more under the lower back and hips, while all-foam builds contour more closely around the shoulders and hips. Firmness preference matters as much as construction.

Which mattress sleeps cooler in Australian climates: Onebed or Sleeping Duck?

Sleeping Duck scores higher for cooling: 8.4/10 against 7.8/10 for Onebed. The cooling score is our assessment of each brand's published materials and construction; we do not run temperature tests.

How do the trial periods and warranties compare between Onebed and Sleeping Duck?

Onebed: sleep trial 125 nights; warranty 10 years. Sleeping Duck: sleep trial 100 nights; warranty 10 years. Trial conditions such as minimum nights, return fees and delivery areas differ between brands, so read each brand's terms before you buy.

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