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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

Koala vs Sealy

Sealy is a 33 cm innerspring bought in-store with four firmness levels and edge reinforcement on all four sides, but it costs several times what a Koala does and comes with no sleep trial. Koala ships to you, flips between two firmnesses, and includes free returns inside 120 nights. Koala's CHOICE and ProductReview recognition applies to the Koala range rather than to this specific model.

Direct Verdict & Recommendation Answer-First Comparison

The Short Answer: Which mattress should you choose?

Sealy is a 33 cm innerspring bought in-store with four firmness levels and edge reinforcement on all four sides, but it costs several times what a Koala does and comes with no sleep trial. Koala ships to you, flips between two firmnesses, and includes free returns inside 120 nights. Koala's CHOICE and ProductReview recognition applies to the Koala range rather than to this specific model.

  • Price Advantage: Koala starts lower at From $890.
  • Cooling & Airflow: Sealy leads cooling with a score of 8.2/10.
  • Trial Guarantee: Koala gives 120 nights vs Sealy with No sleep trial.

Key differences at a glance

Build & Feel

Construction & Alignment

Koala: All-foam (Flippable — Medium-firm / Firm (7/10))

Sealy: Innerspring (Four levels — Firm / Medium / Plush / Ultra Plush)

Comfort Scores

Cooling & Motion Transfer

Koala: Cooling 7.5/10, Motion 9.4/10

Sealy: Cooling 8.2/10, Motion 7.5/10

Purchase Terms

Trial, Price & Warranty

Koala: From $890 · 120 nights trial · 10 years warranty

Sealy: From $2,399 · No sleep trial trial · 10 years warranty

The differences that matter

Koala compared with Sealy
Specification Koala Sealy
Entry price From $890 (better of the two) From $2,399
Sleep trial 120 nights (better of the two) No sleep trial
Warranty 10 years 10 years
Overall score 9.2 (better of the two) 8.4
Cooling score 7.5/10 8.2/10 (better of the two)
Motion isolation score 9.4/10 (better of the two) 7.5/10
Edge support score 7.3/10 9.4/10 (better of the two)
Firmness Flippable — Medium-firm / Firm (7/10) Four levels — Firm / Medium / Plush / Ultra Plush
Construction All-foam Innerspring
Height / Profile 25 cm 33 cm
Key materials TENCEL Lyocell cover, 7 cm Kloudcell comfort layer, 3-zone high-density support foam, Zero Disturbance technology RestSUPPORT 3-stage coil system, UniCased XT edge support, Gel-visco comfort layers, Wool-blend quilt
Delivery & returns Free delivery (exclusions apply) —

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

Koala vs Sealy in practice

Where you buy and test each one

Koala comes to your door in a box, and the testing happens at home over a 120-night trial with free returns. The Sealy Posturepedic Exquisite Rosewood is sold through Harvey Norman, so you lie on it in a store and choose one of four firmness levels there. This model has no sleep trial, which makes the showroom visit the whole test.

Foam against coils

Koala is 25 cm of foam, with a 7 cm Kloudcell comfort layer over 3-zone high-density support foam. Foam soaks up movement close to where it happens, and Koala scores higher than Sealy for motion isolation. Sealy is a 33 cm innerspring: a RestSUPPORT 3-stage coil system under gel-visco comfort layers and a wool-blend quilt. Air moves through the coil core, and Sealy scores higher for cooling.

Edge support and firmness

Sealy reinforces all four sides with UniCased XT, so the edge holds when you sit on it, and it scores well ahead of Koala on edge support. You also pick from four firmness levels at the same price. Koala gives you two feels in one mattress, medium-firm on one side and firm on the other, so a wrong first guess can be fixed by turning it over.

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 Koala if…

You are buying online and want the right to send it back.

Check Koala price

Choose Sealy if…

You want to test it in a showroom, need a specific firmness out of four, and edge support is a priority.

Check Sealy price

Pros and cons, side by side

Koala

Pros

  • Flippable firmness — change your mind without sending it back
  • The 120-night trial includes free returns
  • CHOICE Recommended and ProductReview.com.au awards 2023–2025 — given to the Koala range, not to this model alone
  • All-foam build with Zero Disturbance makes it strong for couples

Cons

  • All-foam, so it runs warmer than a spring hybrid
  • Only five sizes — no Long Single or Super King
  • Three support zones, where Emma, Origin and Newentor use seven
  • At $1,249 for a Queen it is priced well above budget boxed mattresses

Sealy

Pros

  • Four walls of UniCased XT edge reinforcement, specified by the maker rather than left unstated
  • Four firmness levels at the same price, so choosing the feel costs nothing
  • Stocked in Harvey Norman stores, so you can lie on it before you buy
  • Made in Australia, which Sealy states on the product page

Cons

  • A queen is $3,699
  • No sleep trial, so the showroom is the only chance to test it
  • Sealy does not sell direct; you buy through Harvey Norman
  • The Rosewood build is a Harvey Norman exclusive, so you cannot price-compare it elsewhere

Koala vs Sealy: Frequently Asked Questions

Can you try Koala or Sealy before you buy?

You can lie on the Sealy Posturepedic Exquisite Rosewood in a Harvey Norman store, but once it is delivered there is no sleep trial. Koala is delivered in a box and you try it at home: the trial runs 120 nights and returns are free.

Does the Sealy Posturepedic Exquisite Rosewood have a sleep trial?

No. You choose the firmness in store, and if it turns out wrong at home there is no trial to send it back under. The mattress carries a 10-year warranty.

Is Koala or Sealy better for couples?

Koala's all-foam build with Zero Disturbance technology keeps a partner's movement on their side of the bed, and it scores higher for motion isolation. Sealy's coils pass on more movement, but its reinforced edge lets two people sleep closer to the sides.

Is Koala or Sealy better for back support and spinal alignment?

Koala: All-foam, firmness Flippable — Medium-firm / Firm (7/10). Sealy: Innerspring, firmness Four levels — Firm / Medium / Plush / Ultra Plush. 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: Koala or Sealy?

Sealy scores higher for cooling: 8.2/10 against 7.5/10 for Koala. 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 Koala and Sealy?

Koala: sleep trial 120 nights; warranty 10 years. Sealy: no sleep trial; 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.

Other match-ups

Want a third column? Build your own comparison with up to three mattresses.