Pros
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A mattress that offers great edge support and very good motion isolation - A mattress with zoned support
Cons
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Lacks a machine-washable cover - Very few cooling features
- Mattress returns are limited to exchanges only
Product Overview
Note: The Sealy Posturepedic Optimum Chill Trio Dione mattress has been discontinued and is no longer sold through the Sleep Country website. To see comparable alternatives, see our Best Mattress in Canada list.
The Sealy Posturepedic Optimum Chill Trio Dione is an all-foam mattress designed that sold through third-party retailers like Sleep Country. According to third-party engineer tests that we commissioned, this mattress performed well in areas like edge support and motion isolation. It includes a couple of cooling features, including a cooling cover and gel-infused foam.
A queen-sized mattress is priced at $3,299, making it a higher-than-average priced mattress compared to competitors and similar foam mattresses that we have tested.
If you’re looking for a foam mattress with more cooling features and added convenience like a washable cover at a more affordable price of $899 for a queen, check out Octave Vista. Octave also comes with a longer 365-night sleep trial and 15-year warranty, and a free bedding bundle, which includes a sheet set, pillow(s), mattress protector, and pillow protector(s).
You May Prefer
Octave Vista
Our Rating:
9.7 /10
Mattress Pricing
Prices are pulled from mattress brand websites or trusted third-party retailers. We check prices monthly to stay accurate. Prices on our site don't reflect any current sales or promotions. Learn more >
Sealy Posturepedic Mattress Construction
The Sealy Posturepedic Optimum Chill Trio Dione mattress is 11" tall. The foam is CertiPUR-US® certified, ensuring it meets specific standards for content, emissions, and durability.
Mattress Layers
The Sealy Posturepedic Optimum Chill Trio Dione mattress contains 2 layers of foam, which work together to provide overall comfort and support.
- 1st Layer: 3" of cooling gel memory foam that quickly conforms to the body's shape, as you lie down, also reduces motion transfer while cradling your shoulders and hips.
- 2nd Layer: 8" of higher-density foam that acts as a support base. The rigidity of this layer prevents you from sinking too deeply into the mattress.
Sleep Country describes Chill Trio Dione as having 'generous layers of quick response OptiSense™ Liquid Gel Memory Foam.' However, according to an infographic their customer service sent to our team, only the top layer uses this foam. It's also unclear whether this cooling gel layer is infused with anything else.
Mattress Cover
Sleep Country describes Chill Trio Dione as having 'generous layers of quick response OptiSense™ Liquid Gel Memory Foam.' However, according to an infographic their customer service sent to our team, only the top layer uses this foam. It's also unclear whether this cooling gel layer is infused with anything else.
Mattress Testing
To ensure our mattress reviews are thorough and trustworthy, we buy the products ourselves and have them tested by independent licensed engineers (commissioned by us) with no stake in the results.
These third-party engineers apply a consistent testing process to every mattress using a detailed framework. Every mattress is tested the same way, whether it's foam or hybrid. Because these types perform differently, we rate them on separate scales to ensure the scores are fair and meaningful.
We believe independent testing is essential to producing reliable and meaningful comparisons. That's why all test results are reviewed and signed off by an APEGA-certified engineer, operating under a strict code of ethics.
We use the testing results and over 40 criteria to build our scoring methodology.
Tests and reviews without this level of professional oversight may be more prone to errors and unintended bias.
Read Octave Review
Delivery & Other Policies
Note: This mattress has been discontinued and is no longer available for purchase through Sleep Country. You may be able to find it for purchase through individual retailers.
The Sealy Posturepedic Optimum Chill Trio Dione mattress from Sleep Country Canada will arrive at your home neatly packaged in heavy-duty plastic. Delivery typically takes between 3–10 business days business days, and shipping is free for orders over $75. You can choose the standard delivery service or opt for an upgrade to Green Glove Delivery, which includes delivery to a specific room in your home, set up and assembly of the mattress, as well as the removal of your old mattress and any packaging.
You will have the chance to test this mattress during Sleep Country's 100-night sleep trial. If you decide to return your mattress, you will need to organize the return to the store yourself, even if you placed your order online. Sleep Country does not offer home pickups for returns, nor do they provide refunds. Instead, you will receive in-store credit, minus a $65 exchange fee, which can be applied toward the purchase of another mattress. If your next mattress choice is more expensive, you will need to cover the difference in price.
Additionally, Sleep Country offers a 10-year limited warranty with your mattress, which covers manufacturing defects, as is standard in the mattress industry.
Try the Octave Vista with no pressure for 365 nights.
Read Octave Review
Company Overview
Sealy began making custom mattresses in the 1880s, taking its name from the Texas town where it was founded. By the 1920s, it had become a major player in the mattress industry. The company introduced its well-known Posturepedic line in the early 1950s.
In 2012, Sealy merged with competitor Tempur-Pedic to form Tempur Sealy International, Inc. As of February 2025, the parent company now operates under the name Somnigroup International. It also owns the Stearns & Foster brand.
Customer Reviews & Feedback
Third-party review sites like the Better Business Bureau (BBB) and Trustpilot collect and publish customer feedback about companies and their products, and aren't controlled by the companies being reviewed. They offer a snapshot of overall customer satisfaction and highlight common issues shoppers might face. Checking ratings on sites like these can be a useful way for customers to make more informed purchasing decisions.
Currently, Sealy holds a "B-" (unaccredited) rating on the Better Business Bureau, but a customer review rating of only 1/5. On Trustpilot, Sealy is rated "Poor" with a customer review rating of 2.2/5.
Should You Buy Optimum Chill Trio Dione?
Sealy Posturepedic Optimum Chill Trio Dione
Queen
$3,299
The Sealy Posturepedic Optimum Chill Trio Dione is one of the higher-priced options in the all-foam mattress lineup. Therefore, shoppers considering Sealy will need to evaluate whether the features are worth the price to them. You might prefer the Sealy Posturepedic Optimum Chill Trio Dione if you are looking for:
- A mattress from a well-known brand
- A mattress with great edge support and very good motion isolation
That said, if you want a better return policy and a longer sleep trial, you might want to consider Octave Vista. It comes with a 365-night sleep trial, free returns with full refunds, and a 15-year warranty. You also get a free bedding bundle. The Octave Vista also costs less at $899 for a queen-size.
Frequently Asked Questions
Are Sealy Posturepedic mattresses good?
The Sealy Posturepedic Optimum Chill Trio Dione mattress is a good option if you're in search of a memory foam mattress that offers good edge support and minimal motion transfer, making it ideal for couples, that is, if you don't mind the $3,299 price tag. It is on the pricier side and does not include any additional cooling features. It's also worth noting that the mattress cover is not machine-washable, and both the sleep trial and warranty are fairly standard.
Where are Sealy Posturepedic mattresses made?
All Sealy Posturepedic mattresses sold in Canada are manufactured locally. While they may use a blend of Canadian and U.S. materials, the mattresses themselves are assembled in Canada, which is a nice plus if you're looking to shop for Canadian-made products.
How much is a Sealy Posturepedic mattress?
Prices can vary quite a bit depending on the model and size. Entry-level Sealy Posturepedic mattresses usually start around $800, while their more premium models can go upwards of $4,000.
In comparison, Octave Vista has a price range of $599 to $1,298. A queen-size Vista mattress costs $899.
What does the Sealy Posturepedic warranty cover?
Sealy's warranty covers manufacturing defects, including structural issues and significant indentations greater than 1.5 inches. Accidental damage and minor wear-and-tear aren't included.
What Sealy Posturepedic mattress alternatives should I consider?
If you're open to exploring other options, the Octave Vista is a solid alternative, with a cooling score of 8.0/10 and an affordable price of $899 for a queen. The Vista features a CryoFusion™ nanofiber cover and copper-infused memory foam with PolarMAX® phase-change treatment.
It also includes multi-zone support foam with built-in air channels to help with airflow and temperature control. The machine-washable top cover is a thoughtful bonus, especially if you're looking for something easy to maintain. It ships with a 365-night sleep trial, a 15-year warranty, and a free bedding bundle.
Best Memory Foam Mattress
Forbes, 2024
All the content on our site, from product reviews to comparisons, is intended to provide general information to help guide your mattress search. We work with independent third-party engineers to test all mattress products we purchase, and we use the test results alongside public data to inform our reviews and comparisons.
The product details in each review reflect how the mattress performed at the time we purchased and tested it, as shown by the "Published" date.
Since brands can update their materials, pricing, or availability over time, we also note when the product was originally purchased, either directly in the article or on our disclaimer page, to maintain clarity and transparency.
If you see an "Updated" tag on a page with a more recent date than the published date, it simply means we've made editorial changes. It does not necessarily indicate any update to the mattress or its test data.
Finally, unless otherwise stated, any mention of where a mattress is made refers specifically to the product we received and tested.
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