The Sealy Back Support Harmony is a discontinued Australian Queen spring mattress, not a model with confirmed current stock. CHOICE lists its claimed feel as firm and publishes construction specifications, but its rating and test results are available to members only. That means the accessible evidence can describe what the mattress was, but cannot support a verdict about how well it performed.
What mattress did CHOICE review?
CHOICE categorizes the Sealy Back Support Harmony as an in-store Queen spring mattress. Its listed firmness is “firm,” which is the product’s claimed feel rather than an independently verified comfort assessment. CHOICE labels its availability “Discontinued model.” CHOICE’s Sealy Back Support Harmony page
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What are its specifications?
| Specification | CHOICE listing |
|---|---|
| Size | Queen |
| Construction | Spring |
| Core type | Light spring |
| Claimed firmness | Firm |
| Springs | 204 per square metre |
| Layers | 8 |
| Weight | 38 kg |
| Thickness | 24 cm |
| Dimensions | 204 x 153 x 24 cm |
These are product specifications recorded by CHOICE, not measurements of comfort, durability, or support performance. The accessible page does not give a date for its underlying physical test or the full test method.
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The accessible CHOICE page lists test categories including support when new, support for larger and petite sleepers, support over time, stability, sagging resistance, breathability, resistance to wear, and warmth or coolness. The Expert Rating and results for those categories are members-only. Without those results, it is not possible to say whether the mattress passed or failed a test, or how it compared with other mattresses.
#1 Best Overall
- 2” SEALYCOMFORT GEL MEMORY FOAM: This cushioning gel memory foam layer conforms to the shape of your body, providing tailored pressure relief and support where you need it most
- 2.25” SEALYSUPPORT TRANSITION FOAM: This additional layer of high-density foam enhances the overall comfort of the queen mattress in a box by offering extra support and durability
- 7” SEALYRESPONSIVE ENCASED COILS: Featuring individually encased coils, this 12 inch queen mattress provides targeted support across the entire surface, allowing for independent movement and reduced motion transfer
- CERTIPUR-US CERTIFIED: The Sealy Dreamlife mattress foam meets the strict standards set by CertiPUR-US, ensuring it is made without certain harmful chemicals including formaldehyde, ozone depleters, phthalates regulated by the U.S. Consumer Product Safety Commission, or mercury, lead or other heavy metals.
- SURFACE-GUARD TECHNOLOGY: Built-in antimicrobial protection with Surface-Guard Technology helps prevent the growth of bacteria and the buildup of allergens on the mattress surface
What did it cost, and is it still available?
CHOICE displayed A$1,099 as the price and A$999 as the price paid on sale or after bargaining. Those are historical figures on a page that identifies the model as discontinued; they are not a current quote or evidence that a retailer still has stock. Current remaining inventory and an official successor have not been established.
Are Harmony Deluxe and Harmony Ultra the same mattress?
No equivalence is established. Sealy Singapore lists market-specific PostureSense products named Harmony Deluxe and Harmony Ultra: the Deluxe is described as cushion-firm and approximately 30 cm thick, while the Ultra is medium and approximately 34 cm thick. Those product listings do not show that either is the Australian Back Support Harmony or its successor. Sealy Singapore product listings
Rank #2
- 2.5” SEALYCOMFORT GEL MEMORY FOAM: This cushioning gel memory foam layer conforms to the shape of your body, providing tailored pressure relief and support where you need it most
- 2.5” SEALYSUPPORT TRANSITION FOAM: This additional layer of high-density foam enhances the overall comfort of the queen size mattress by offering extra support and durability
- CERTIPUR-US CERTIFIED: The Sealy Dreamlife mattress foam meets the strict standards set by CertiPUR-US, ensuring it is made without certain harmful chemicals including formaldehyde, ozone depleters, phthalates regulated by the U.S. Consumer Product Safety Commission, or mercury, lead or other heavy metals.
- SURFACE-GUARD TECHNOLOGY: Built-in antimicrobial protection with Surface-Guard Technology helps prevent the growth of bacteria and the buildup of allergens on the mattress surface
- 10-YEAR LIMITED WARRANTY: Rest assured with reliable comfort, this queen memory foam mattress is backed by Sealy’s rigorous product testing for exceptional quality and long-lasting durability
ProductReview.com.au has a separate listing for a Sealy Harmony Deluxe Mattress, also marked discontinued. Reviews of that differently named model are not evidence of the Back Support Harmony’s performance. ProductReview.com.au’s Sealy Harmony Deluxe listing
What should you check if you find one for sale?
Because the model is discontinued and similar names refer to different market-specific products, verify the exact identity and terms of any listing before purchasing. Check:
Rank #3
- 1” SEALYCOMFORT GEL MEMORY FOAM: This cushioning gel memory foam layer conforms to the shape of your body, providing tailored pressure relief and support where you need it most
- BREATHABLE COMFORT: Advanced foam technology promotes airflow, offering an ideal balance of comfort and support while maintaining a cool, breathable sleep environment
- CERTIPUR-US CERTIFIED: The Sealy Dreamlife mattress foam meets the strict standards set by CertiPUR-US, ensuring it is made without certain harmful chemicals including formaldehyde, ozone depleters, phthalates regulated by the U.S. Consumer Product Safety Commission, or mercury, lead or other heavy metals.
- SURFACE-GUARD TECHNOLOGY: Built-in antimicrobial protection with Surface-Guard Technology helps prevent the growth of bacteria and the buildup of allergens on the mattress surface
- 10-YEAR LIMITED WARRANTY: Rest assured with reliable comfort, this queen memory foam mattress is backed by Sealy’s rigorous product testing for exceptional quality and long-lasting durability
- The full model name, market, size, and dimensions on the mattress label or seller documentation.
- Whether the mattress is new, used, or refurbished, and what condition the seller guarantees.
- The stated comfort feel and construction for that exact model, rather than relying on another Harmony product’s description.
- Any independent test results that identify this exact model.
- Trial, return, delivery, and warranty terms from the specific seller, including who pays return or collection costs.
CHOICE’s available page does not establish those seller-specific terms or current availability. If you are comparing a possible replacement, compare exact model identity, dimensions, comfort feel, construction, published independent results, and the seller’s trial, return, delivery, and warranty terms.
Quick Recap
Best Value
- 2” SEALYCOMFORT GEL MEMORY FOAM: This cushioning gel memory foam layer conforms to the shape of your body, providing tailored pressure relief and support where you need it most
- 2.25” SEALYSUPPORT TRANSITION FOAM: This additional layer of high-density foam enhances the overall comfort of the king hybrid mattress by offering extra support and durability
- 7” SEALYRESPONSIVE ENCASED COILS: Featuring individually encased coils, this king memory foam mattress provides targeted support across the entire surface, allowing for independent movement and reduced motion transfer
- CERTIPUR-US CERTIFIED: The Sealy Dreamlife mattress foam meets the strict standards set by CertiPUR-US, ensuring it is made without certain harmful chemicals including formaldehyde, ozone depleters, phthalates regulated by the U.S. Consumer Product Safety Commission, or mercury, lead or other heavy metals.
- SURFACE-GUARD TECHNOLOGY: Built-in antimicrobial protection with Surface-Guard Technology helps prevent the growth of bacteria and the buildup of allergens on the mattress surface
Rank #4
- 3” SEALYCOMFORT GEL MEMORY FOAM: This cushioning gel memory foam layer conforms to the shape of your body, providing tailored pressure relief and support where you need it most
- 3.25” SEALYSUPPORT TRANSITION FOAM: This additional layer of high-density foam enhances the overall comfort of the king size mattress by offering extra support and durability
- 7” SEALYRESPONSIVE ENCASED COILS: Featuring individually encased coils, this king memory foam mattress provides targeted support across the entire surface, allowing for independent movement and reduced motion transfer
- SEALYCOOL STRETCH KNIT COVER: Soft and stretchable, this knit cover enhances airflow and helps regulate temperature, keeping you cool and comfortable throughout the night
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
