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We invested in manufacturing automation to create the most affordable Canadian-made 🍁 9-inch antimicrobial foam mattress entirely made in Canada by reducing non-crucial steps. You can enjoy peaceful nights knowing that this value mattress - that has the same quality as every others Polysleep's products - is looking after your health and... your wallet!
The Sierra Mattress
3624
$406
$580
save
$174
Dimension:
39" x 75" x 9" - 41.4 lbs
Dimension:
54" x 75" x 9" - 56.6 lbs
Dimension:
60" x 80" x 9" - 61.6 lbs
Dimension:
76" x 80" x 9" - 78.8 lbs
Estimated delivery:
Few units left!
We invested in manufacturing automation to create the most affordable Canadian-made 🍁 9-inch antimicrobial foam mattress entirely made in Canada by reducing non-crucial steps. You can enjoy peaceful nights knowing that this value mattress - that has the same quality as every others Polysleep's products - is looking after your health and... your wallet!
Get 30% Off The Sierra Mattress
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Mesures & Dimensions
Twin
39" x 75" x 9" - 41.4 lbs
Full
54" x 75" x 9" - 56.6 lbs
Queen
60" x 80" x 9" - 61.6 lbs
King
76" x 80" x 9" - 78.8 lbs
Product specifications
The 9" Sierra memory foam mattress is made of 2 layers.
Removable cover:
100% Polyester.
Comfort layer (2 inches):
Polysleep open cell viscoelastic hybrid foam ISO 20743 certified -
Density of 3.0 lb/ft3.
Support layer (7 inches):
Polysleep foam - Density of 1.5 lb/ft3.
Our foams are latex free.
CertiPUR-US: manufactured without ozone depleting
chemicals and regulated by the
Consumer Product Safety Commission for indoor
air quality (less than 0.5 ppm) and for volatile
organic compound emissions (Low VOC).
ISO 20743: ISO certified medical standard; no more dust mites or bacteria buildup.
Shipping
Enjoy fast & free shipping across all 10 Canadian provinces — no minimum required!
Delivery takes approximately 3 business days in Quebec and Ontario, and 5+ days elsewhere*
Please note that some exceptions may occur in remote or hard-to-access areas.For Yukon, Northwest Territories, and Nunavut, additional fees apply — our team will reach out before shipping to confirm costs and timelines.
Sometimes we’re even quicker than expected, so keep an eye on your inbox for your tracking number and delivery updates!
*When there are no carrier strikes or disruptions.
Trials & Warranty
Trials
We know you’ll love your Sierra mattress — that’s why we offer a 100-night risk-free trial!
If it’s not a match, you can request a return after 45 nights of sleep, you can easily initiate a return through our website.
Please visit our page to see all the details
Just make sure your mattress is clean and undamaged — for hygiene reasons, we can’t accept soiled returns.
And don’t worry about keeping the box, once your mattress is out of its sealed packaging, it’s impossible to fit it back in (unless you happen to have a 3-ton hydraulic compressor at home 😄).
Warranty
This warranty covers manufacturing defects, foam durability, and issues with the fabric or zipper when the mattress is kept clean and properly supported.
Normal wear, stains, or damage from misuse aren’t covered — but rest easy knowing your Sierra mattress is made in Canada with the same premium foam and craftsmanship trusted by sleepers nationwide.
Durable. Supportive. Guaranteed 5 years.
Free Shipping
100-Night Trial
5-Year Warranty
The Sierra Mattress
Compare our mattresses
Our products are carefully and delicately crafted in a local factory using state-of-the-art manufacturing methods. We take pride in working with superior, durable materials and always offer the best possible source of comfort on the market.
| Polysleep Sierra | Polysleep Origin 2.0 | Polysleep Luna | Other mattresses | |
|---|---|---|---|---|
|
Queen Price Your future Sierra mattress is the best price for the quality you can get. |
$483 |
$697 |
$963 |
Expensive |
|
Mattress Height A value mattress shoudn't feel like sleeping on hard rocks. |
9" |
10" |
12" |
Meh |
|
Made in Canada Why invest in an international product when you can purchase locally. |
Sometimes |
|||
|
Antimicrobial Certified ISO 20743 Foam Allergies are something from the past. Sleep like a baby! |
||||
|
Best-in-Class Motion Transfer Made with viscoelastic open cell foams, you won't notice your partner's movement anymore. |
Firmness Scale
Our mattresses are rated on a firmness scale from 1 to 10, with 1 being the softest and 10 being the firmest. Experts from various medical backgrounds recommend a semi-firm mattress between 5 and 8 on the firmness scale.
Recommended by Experts
POLYSLEEP
SOFT
FIRM
The Sierra Mattress
Canada's Top Value Foam Mattress
1
2
3
1
Antimicrobial Foam
The antimicrobial top layer inhibits the growth of bacteria and provides a healthier sleep.
2
Supportive Foam Base
The base layer, made of millions of foam cells, provides unparalleled support improving overall comfort.
3
Removable Cover
Durable cover that can be removed with a zipper. Textile is very soft.
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⚠️ Handle with care when opening!
Your Polysleep mattress is tightly compressed using high-pressure hydraulic machinery.
Use the marked areas to open the box. Then use scissors to remove the plastic wrapping, but avoid knives or box cutters, as a sharp blade could easily slice through the foam.
Take your time — your mattress will unfold and be ready in seconds!
🛏️ Sleep on it right away
Once you remove the plastic, your mattress will expand almost instantly.
You can sleep on it immediately — there’s absolutely no risk of damage.
What foundation should I use with my mattress?
💤 Natural stabilization
The core of the mattress will take a few days to regain its full shape, stabilize and will reach its optimal firmness within about one week.
Your body may need up to 45 days to fully adjust to your new level of comfort and support.
Enjoy it from the very first night — comfort only gets better with time!
don't forget these
Sleep Must-Haves
Our Certifications
