Octave vs Sealy Mattress Comparison (2025)

Alexandra Forest

Sleep Content Specialist

• Up-to-Date

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  The information included in each mattress review at the time of publication is accurate to the best of our knowledge.
  
  Our reviews do not speak for future versions of these mattresses.

• Methodology

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  We test and review the industry’s most popular mattresses using a weighted scoring system factoring in 40+ criteria.
  Learn more >

Which Is Better: Octave vs Sealy?

Octave Vista and Sealy Posturepedic Optimum Chill Trio Dione are both memory foam mattresses. Each offers pressure-relieving cushioning and zoned support. But only Octave has the meticulously engineered construction you need to enjoy a better night’s sleep and wake up feeling energized.

In addition to its innovative five-zoned support system that relieves strain on muscles and joints, Octave Vista also comes with advanced cooling features like a CryoFusion™ cooling nanofibre cover and premium copper-infused cooling foam, and five-zone support. Vista is far more affordably priced at just $899 for a queen size, compared to $2,399 for Chill Trio Dione.

Octave provides even more value with a 365-night sleep trial, a 15-year warranty, and a free bedding bundle with your purchase—something you won’t get with a mattress purchased at Sleep Country.

Best Sleep

Winner:

Octave

The Octave Vista mattress outscored Sealy Posturepedic Optimum Chill Trio Dione in head-to-head mattress testing conducted by third-party engineers (commissioned by us).

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Get a FREE Bedding Bundle, 50% off all Duvets, 20% off Adjustable Bases, and up to 70% off all bedding with mattress purchase.
Sale ends December 26th. See website for details >

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What We Love

• Advanced cooling features to keep temperatures low and comfort high
• 365-night sleep trial to make sure you love your mattress
• Exceptional value starting at just $599 ($899 for a queen size)

Overall Ratings

Edge support and motion isolation are factored into our overall mattress ratings. These scores are shown in green (scores of 5.0+), yellow (3.0–4.9), or red (2.9 and below). Firmness, bounce, and cooling features are a matter of personal preference and aren’t part of our rating system, so these scores are shown in grey.

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Determined by how much the mattress sinks under applied weight. The lower the score out of 10, the softer the mattress.

6.8 /10

Firmness

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Determined by how much the mattress edge sinks under applied weight. A mattress with average to good edge support will score 5/10 or higher.

7.5 /10

Edge Support

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Determined by measuring a medicine ball’s impact on the mattress. Average to good motion isolation would be 5/10 or higher.

7.3 /10

Motion Isolation

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Determined by dropping a medicine ball onto the mattress. The higher the first bounce, the higher the score out of 10.

3.7 /10

Bounce

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Determined by entering a mattress’s cooling features into our scoring algorithm. The more effective cooling features that are present, the higher the score out of 10.

7.2 /10

Cooling Features

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Mattress Breakdown

Both Octave Vista and Sealy Posturepedic Optimum Chill Trio Dione are memory foam mattresses with cooling features. But that’s where the similarities end.

Octave provides advanced cooling features like a CryoFusion™ cooling nanofibre mattress cover and copper-infused memory foam treated with PolarMAX® phase-change material. Its five-zoned support foam layer also provides targeted pressure-point relief for a good night’s sleep. The mattress is much more affordably priced than Chill Trio Dione at just $899 for a queen size and comes with a longer 365-night sleep trial and a 15-year warranty.

In comparison, Sealy Posturepedic Optimum Chill Trio Dione has limited features—only a cooling gel memory foam layer, cooling cover, and three-zone support. Despite these limited features, the mattress is priced much higher than Octave at $2,399 for a queen size. The Sealy mattress only comes with a 100-night sleep trial and a 10-year warranty.

Chill Trio Dione doesn’t just fall short on features and value. This mattress doesn’t have enough reviews on third-party websites to assess whether it’s worth the price tag. Sleep Country’s website has only a few reviews of this mattress, with none more recent than 2022. Sealy as a brand also has few reviews outside of its own website, and it’s rated “Poor” on Trustpilot and “B-” (unaccredited) on Better Business Bureau. (Octave’s parent company is rated “Excellent” on Trustpilot and “A+” on BBB.)

To help you choose between Sealy vs Octave, we’ve gathered all the information you need to accurately compare these two mattresses. You’ll note that Chill Trio Dione’s overall rating of 3.1/10 is considerably lower than Octave’s 9.7/10. That’s because the Sealy mattress has a high price tag, few features, restrictive return policies, and a poor online reputation.

Octave Vista 9.7 BOXING DAY SALE! Get a FREE Bedding Bundle, 50% off all Duvets, 20% off Adjustable Bases, and up to 70% off all bedding with mattress purchase. Sale ends December 26th. See website for details >

Sealy Posturepedic Optimum Chill Trio Dione 3.1

Read Octave Vista Review	Read Chill Trio Dione Review
Price (Queen)
$899	$2,399
Sleep Trial Nights
365	100
Warranty Years
15	10
Feel
Medium-firm	Medium-firm
Standout Features
365-night risk-free sleep trial 15-year warranty Ideal for side, back, and stomach sleepers Above-average edge support and motion isolation Machine-washable cooling cover Five-zoned ergonomic support to relieve strain on muscles and joints Advanced cooling features like copper-infused memory foam and phase-change material Free bedding bundle with pillow(s), a cotton sheet set, mattress protector, and pillow protector(s) Free shipping, returns, and pickups in major metro areas	100-night sleep trial 10-year warranty A memory foam mattress from a well-known brand Zoned support and targeted pressure relief Suitable for side, back, and stomach sleepers Some cooling features, including cooling gel memory foam and cooling yarn in the top cover
Made In
Canada	Canada

Get the mattress with a 365-night sleep trial and 15-year warranty.

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Mattress Sizes & Prices

^{* Based on standard sizing. Individual mattress dimensions may vary.}

Get a queen-size mattress for under $1,000 when you choose Octave.

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Mattress Performance Results

Firmness

In third-party engineer testing (commissioned by us), Octave Vista scored 6.8/10 for firmness. Sealy Posturepedic Optimum Chill Trio Dione scored a little lower at 6.2/10.

Both mattresses fall into the medium-firm category. Medium-firm mattresses are ideal for all sleep styles, meaning you should find this level of firmness comfortable whether you sleep on your back, side, or stomach. That said, only Octave comes with five-zoned ergonomic support that’s engineered for greater cushioning and pressure-point relief, soothing your sore muscles and joints while you sleep.

Edge Support

Foam mattresses aren’t typically known for having high edge support. However, both Octave and Sealy are above-average in this regard. Octave Vista scored 7.5/10 for edge support, and Chill Trio Dione scored 8.5/10. Either mattress will allow you to sit comfortably on the edge of the bed, and you should have no trouble getting out of bed in the morning.

Motion Isolation

Motion isolation helps you enjoy a good night’s sleep without being disturbed by a restless partner, kids, or pets. Chill Trio Dione has an above-average motion isolation score of 7.1/10. But if you’re looking for a little extra motion isolation, you may prefer Octave Vista with its higher rating of 7.3/10. You can expect to sleep soundly and not notice any movement from the other side of the mattress, which is important if you’re a light sleeper.

Bounce

Bounce is a matter of personal preference. Low bounce is a good thing if you’re a light sleeper who’s easily woken, while higher bounce is ideal if you often change sleep positions.

All-foam mattresses typically score low for bounce. Chill Trio Dione earned a bounce score of 2.9/10. This is quite low, meaning you could have some difficulty changing sleep positions. If you’re looking for more spring and responsiveness, consider Octave Vista with its higher bounce score of 3.7/10.

Vista contains a layer of Elastex® foam, which lets you change positions without any difficulty. This foam layer is designed to be contouring as well as responsive, and works with the mattress’s five-zone support system to give you a supportive, restful sleep throughout the night.

Cooling Features

Foam can be known to trap heat, so most modern foam mattresses incorporate cooling features to help ensure breathability and airflow. Octave achieves this by incorporating features such as CryoFusion™ cooling nanofibres in the mattress cover, PolarMAX® phase-change material, a layer of CopperGel™ infused memory foam, and breathable Elastex® foam. These elements earned Octave Vista a cooling features score of 7.2/10. 

Sealy Posturepedic Chill Trio Dione, also a foam mattress, received a cooling features score of just 2.4/10. Despite being promoted as a cooling mattress, it only has two known cooling features, which include the mattress cover made with cooling yarn, and a layer of gel-infused memory foam. These scores indicate you’re more likely to have a cooler and more comfortable sleep on an Octave Vista.

Choose the mattress with better pressure-point relief, motion isolation, and cooling features.

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Mattress Construction

Octave Vista has 3 layers of foam. Its construction includes copper-infused memory foam treated with temperature-balancing PolarMAX® phase-change material, Elastex® foam for additional spring and support, and multi-zoned ergonomic support foam to relieve tension on your muscles and joints.

In comparison, Sealy Posturepedic Optimum Chill Trio Dione has only 2 interior layers of foam. This is unusual for a mattress with such a high price tag. Chill Trio Dione also lacks the advanced features we would expect to see for a cooling mattress at this price point. This is concerning because memory foam is known for sleeping hot. The gel infusion in the top layer may not be enough to balance the heat-trapping properties of memory foam.

Sealy also doesn’t share any information about the ChillActive™ technology in the top layer, so it’s not clear how much cooling this layer can provide.

Octave Mattress Layers

• Layer 1: Octave Vista’s top (comfort) layer is 2″ of CopperGel™ memory foam treated with PolarMAX® phase-change material, which adapts to seasonal temperature changes. This layer contours around your body, providing immediate relief from strain on your muscles and joints. Copper is also an antimicrobial metal and helps promote a clean, fresh sleep surface while transferring heat away from your body.
• Layer 2: Vista’s transition layer is 2″ of premium Elastex® foam, which is designed to be breathable and responsive. This specialized foam layer has the same springy feel as natural latex with the same pressure-relieving feel. The added bounce also makes it easier for you to change sleep positions.
• Layer 3: The support layer is 8″ of high-density foam divided into a unique five-zoned support system. This layer provides contouring support for your body, with added support beneath your back, hips, and knees. This innovative design reduces discomfort and stiffness while caring for your body and aiding in its natural recovery.

Tempur-Pedic Mattress Layers

• Layer 1: The top (comfort) layer is 3″ of cooling gel memory foam. This layer shapes itself around your body as you lie down. Foam density is unknown.
• Layer 2: The bottom (support) layer is 8″ of higher-density foam, although exact foam density is unknown. In addition to acting as the mattress’s foundation, the rigidity of this layer prevents you from sinking too far into the mattress.

Octave Vista’s top cover is infused with CryoFusion™ cooling nanofibres, which give the sleep surface a refreshingly cool feel. This fabric wicks away moisture from your body throughout the night, and is machine washable for easy cleaning. Octave uses premium and high-durability foams in all its mattresses, and they’re manufactured without fiberglass or toxic chemicals.

Sealy Posturepedic Optimum Chill Trio Dione has a top cover containing cooling yarn, which is meant to absorb and dissipate heat. Although the cover has a zipper, it isn’t machine washable. You’ll need to carefully spot-treat any spills or stains.

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Delivery, Sleep Trial & Returns

Octave Vista ships by ground from Ontario or Alberta using FedEx. Your order should arrive in 3–10 business days, including dispatch and delivery time, and arrives directly at your doorstep throughout most parts of Canada. Additional fees may apply for some remote locations.

If you buy Sealy Posturepedic Optimum Chill Trio Dione from Sleep Country (like we did), it ships for free and your order should arrive within 3–10 business days, including dispatch and delivery time. You can choose between standard delivery or upgraded Green Glove Delivery, which includes moving the mattress to a specific room, setting up the mattress, and removing your old mattress and any packaging.

It’s worth noting that Chill Trio Dione can also be purchased from Best Buy and Walmart, but the order will still be fulfilled by Sleep Country.

Octave provides a generous 365-night sleep trial so you can try the mattress at home. If you choose to return your mattress within the trial period, Octave will pick up returns for free and provide a full refund.

In comparison, the Sealy mattress comes with a much shorter sleep trial of just 100 nights. This sleep trial has far more conditions and restrictions than Octave’s. If you want to return your Sealy mattress during the sleep trial, you’ll have to bring it back to the store yourself. You also won’t receive a full refund, only store credit—minus a $65 exchange fee.

Sealy provides a 10-year mattress warranty. This warranty length is standard for the mattress industry. However, Octave goes above and beyond with a much longer 15-year warranty.

Pick the mattress with the longer sleep trial and warranty.

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Should You Buy Octave or Sealy?

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