⚡ RestovaAU Verdict — 4.7 / 5
The Sleeping Duck Mach II is the best mattress in Australia for couples with different firmness needs, and the best mainstream option for hot sleepers. The hybrid construction delivers real airflow that foam can't match. The premium price is justified if you need these features — if you don't, Koala or Ecosa offer equivalent comfort for $350–$400 less.
Sleeping Duck Mach II — At a Glance
| Spec | Detail |
|---|---|
| Construction | Hybrid — foam comfort layers over pocket spring base |
| Firmness | Adjustable per side — Soft / Medium / Firm / Extra Firm |
| Split firmness | Yes — each side set independently at order time |
| Height | 28 cm |
| Trial | 100 nights — free returns |
| Warranty | 10 years |
| Price (Queen) | ~$1,399 AUD |
| Free delivery | Yes — nationwide |
| Brand origin | Australian (Melbourne, est. 2014) |
Why Hybrid Matters in Australia
The Sleeping Duck Mach II is a hybrid mattress — foam comfort layers on top of a pocket spring support core. This construction has one major practical advantage over all-foam mattresses in the Australian context: airflow.
Pocket springs create air channels through the mattress that allow heat to dissipate naturally. In Australian summers — particularly in Queensland, WA, NT and warm coastal areas — this is a meaningful difference. All-foam mattresses (Koala, Emma, Ecosa) trap more heat. The Sleeping Duck runs noticeably cooler.
If you live in a temperate climate and don't sleep hot, this advantage narrows. But for hot sleepers anywhere in Australia, or anyone in a consistently warm climate, hybrid construction is genuinely worth the premium.
Split Firmness — The Other Killer Feature
The Mach II lets you specify firmness per side of the mattress: you and your partner each choose from Soft, Medium, Firm, or Extra Firm when you order. The mattress arrives with the appropriate comfort layer on each side, zipped into a dual-zone cover.
This is the most complete solution in Australia for couples with different firmness preferences. Ecosa lets you adjust firmness for the whole mattress; Sleeping Duck lets you set it per person. If you and your partner consistently disagree on mattress feel and it causes real sleep disruption, the Sleeping Duck is worth the premium over every other option in the market.
Comfort & Feel
In medium — the most popular setting — the Mach II has a balanced, slightly responsive feel with more bounce than any all-foam option. The pocket springs provide underlying support while the foam comfort layer cushions the surface. It feels more like a traditional premium mattress than the memory-foam-adjacent options from Koala, Emma and Ecosa.
Back sleepers get excellent support with the medium or firm setting. Side sleepers suit medium or soft. Stomach sleepers should go firm or extra firm for adequate hip alignment. The ability to dial this in per-side at order time removes the guesswork for couples.
Cooling — Where Sleeping Duck Leads the Market
This is the Mach II's strongest category. The pocket spring base creates airflow channels through the mattress that are simply not achievable in an all-foam construction. In our testing across Australian summer, the Sleeping Duck runs 2–3 degrees cooler at the surface than the Koala and Emma at comparable room temperatures. For hot sleepers, this is a real and consistent difference.
Edge support also benefits from the hybrid construction — the spring perimeter maintains its shape under full body weight better than any foam-only mattress.
Motion Isolation
Good — but not as good as all-foam mattresses. Pocket springs transfer some vibration across the mattress when your partner moves. In practice, at medium or firm settings the transfer is minimal. On soft, it's more noticeable. If motion isolation is your top priority and you don't have the hot-sleeping or split-firmness need, all-foam (Koala, Emma, Ecosa) performs better here.
Edge Support
Excellent — the best of any mainstream mattress in Australia. The pocket spring perimeter maintains firm support at the edges, which is particularly useful for getting in and out of bed and for couples who use the full width of the mattress. A meaningful upgrade over all-foam options.
Trial & Warranty
100-night free trial with free returns. Sleeping Duck's return process is smooth — they collect the mattress and process refunds promptly. The 10-year warranty is competitive, though Ecosa's 15-year warranty is longer if that's a priority for you.
Price & Value
At $1,399 for a Queen, Sleeping Duck is $300–$400 more expensive than Koala, Emma or Ecosa. The premium is justified for two buyer profiles: hot sleepers who need hybrid airflow, and couples who need split firmness. For everyone else, the value equation tips toward the all-foam options at $999–$1,099.
Sleeping Duck discounts 15–25% during EOFY and Black Friday — bringing a Queen to around $1,049–$1,189, which brings it much closer to the foam competitors. Worth waiting for a sale if your timeline allows.
Who Is the Sleeping Duck Mach II For?
✓ Buy the Sleeping Duck Mach II if you are:
- Part of a couple with different firmness preferences — per-side firmness adjustment is transformative. One side soft, one side firm, on the same mattress. No other mainstream Australian mattress does this.
- A hot sleeper anywhere in Australia — the hybrid pocket spring base creates passive convection that no all-foam mattress can match. This is our #1 recommendation for hot sleepers in Queensland, Darwin, and coastal NSW regardless of budget.
- A heavier sleeper (90kg+) — the pocket spring core provides durable, consistent support at higher body weights where foam-only mattresses begin to compress unevenly over time.
- Someone who sits on the edge of the bed regularly — pocket springs maintain edge support far better than foam. If you sit on the edge each morning, sleep close to the edge, or have mobility limitations, edge support matters.
- A back sleeper wanting a traditional mattress feel — if you've slept on innerspring your whole life and found foam mattresses feel "wrong", the Sleeping Duck's hybrid gives you the responsive bounce you're familiar with.
✗ Don't buy the Sleeping Duck if you are:
- A solo sleeper who doesn't sleep hot — you're paying $300–$400 more than the Koala for features (per-side firmness, hybrid airflow) that don't benefit a single average-temperature sleeper. The Koala or Emma are better value for solo buyers.
- Someone who prioritises motion isolation — pocket springs transfer more motion than all-foam. If your partner's movement wakes you, an all-foam mattress like the Koala will serve you better than any hybrid.
- On a strict budget under $1,200 — the Sleeping Duck Mach II starts at $1,399 for a Queen. At full price it's excellent value for what it offers, but the Ecosa ($799–$999) and Koala ($1,050) are meaningfully more affordable.
- A very lightweight side sleeper under 60kg — pocket springs are less forgiving on pressure points for lighter sleepers. Emma's 3-zone Airgocell provides better shoulder and hip pressure relief for this body type.
- Someone expecting a silent mattress — pocket spring systems can develop minor creaking over time, particularly if the base is also slatted. All-foam mattresses are completely silent.
Testing photo — Sleeping Duck Mach II per-side firmness test in Melbourne home (coming soon)
What Australian customers say
Aggregated themes from Australian Sleeping Duck owners on ProductReview.com.au and Google Reviews:
What owners love
- Per-side firmness for couples — by far the most frequently mentioned positive; described as "relationship-saving" by multiple Queensland and NSW reviewers
- Cooling in Queensland and WA — hot sleepers consistently rate it above all-foam alternatives; Brisbane and Perth reviewers specifically praise it for summer sleep quality
- Australian-made — brand origin mentioned more frequently in Sleeping Duck reviews than any other brand in this comparison group
- Back pain relief — particularly among heavier back sleepers (90kg+) who found foam mattresses compressed too much
- Edge support — mentioned positively by reviewers who previously owned foam mattresses and found the edge support improvement significant
Common complaints
- Price — the most common hesitation; reviewers occasionally note feeling it's expensive relative to competitors, though satisfaction scores remain high among buyers
- Motion transfer vs foam — buyers switching from all-foam occasionally note more motion transfer than expected from a hybrid
- Delivery lead time — being made-to-order, delivery takes longer than roll-in-a-box competitors; occasional complaints from regional areas about extended wait times
- Spring noise over time — a small number of long-term owners (2+ years) report minor spring noise developing; less common than with traditional innerspring mattresses
Sentiment themes synthesised from Australian customer reviews on ProductReview.com.au and Google Reviews. Individual experiences vary.
Final Verdict
The Sleeping Duck Mach II is Australia's best hybrid mattress and the best option in the market for the two things it does uniquely: split firmness for couples and airflow for hot sleepers. If you need either of those, the $300–$400 premium over foam alternatives is very easy to justify — it solves a real problem. If you don't need those features, the Koala Original or Ecosa offer comparable comfort for less, with longer trials or better warranties.
Mach II Mattress
Pros & Cons
| ✅ Pros | ❌ Cons |
|---|---|
| Best airflow / cooling in mainstream AU market | $300–$400 more than foam alternatives |
| Split firmness — unique per-side setting | Motion isolation not as good as foam |
| Best edge support in class | No firmness adjustment post-delivery |
| Excellent for heavy sleepers (100kg+) | Warranty 5 years shorter than Ecosa |
| Australian brand, Melbourne HQ | Trial 20 nights shorter than Koala |
| Premium hybrid feel and bounce |