SERTA® Modern Series™ 10" Medium Firm Gel Foam Mattress - King
Serta Modern Series mattresses deliver cutting-edge comfort at a great price point, featuring gel-infused memory foams and a convenient mattress-in-a-box design – all proudly crafted in Canada for today’s lifestyle.
Serta Modern Series 10" Medium Firm Gel Foam Mattress - King - Elevate Your Sleep with Luxurious Comfort!
Welcome to a new realm of sleep quality with the Serta Modern Support mattress! Specially designed for those who crave both elegance and comfort, this King size mattress features a sumptuous PureComfort Gel Foam layer and a supportive PureComfort Foam Support Core, enveloped in a breathable Serta CoolWick cover. Experience the perfect fusion of softness and support with this medium-firm mattress, ensuring revitalizing rest every single night.
Key Features
10" Profile Height: Enjoy a thoughtfully balanced mattress designed with two layers that harmoniously combine plush comfort and essential support.
Serta CoolWick Cover: Experience innovation with our breathable cover that efficiently removes moisture and prevents heat retention, resulting in a delightful sleeping atmosphere.
PureComfort Gel Foam: This advanced gel-infused foam offers luxurious cooling comfort while providing effective pressure relief directly on the mattress surface.
PureComfort Foam Support Core: Engineered with eco-friendly soy-based materials, this core ensures lasting support that adapts to your body's needs for incredible comfort.
Crafted in Canada: Proudly made in Canada, this mattress showcases impeccable craftsmanship that reflects our commitment to quality and durability.
Benefits
Refreshing Coolness: Stay cool throughout the night thanks to advanced gel technology that eliminates overheating, ensuring uninterrupted sleep.
Gentle Pressure Relief: Enjoy pressure-relieving comfort that allows for seamless movement, so you can shift positions without feeling trapped or uncomfortable.
Long-Lasting Durability: With CertiPUR-US certified foams, rest easy knowing your mattress is made with quality standards that promise prolonged use and reliability.
Versatile Sizes: Available in various sizes, this mattress fits perfectly in bedrooms from cozy guest rooms to spacious master suites, catering to every design dream.
Ideal For
Those who desire a sumptuous sleeping experience that blends elevated comfort with exceptional support.
Hot sleepers seeking a mattress designed to enhance airflow and eliminate trapped heat.
Couples who benefit from a medium-firm feel catering to diverse sleeping positions and preferences.
Details
Dimensions: 76″ x 80″ (inches) | 193cm x 203cm (centimeters)
Profile Height: 10 Inches
Firmness: Medium
Cover Material: Serta CoolWick Breathable Cover
Comfort Layers: 4.5" PureComfort Gel Foam
Core Design: 6" PureComfort Foam Support Core
Manufacturer Series: Serta Modern Series
Guarantees: Enjoy free next day delivery, a 100 night sleep trial, a comprehensive manufacturer's warranty, and a price match guarantee.
Transform your sleep experience with the Serta Modern Support mattress, where luxurious materials and innovative design coalesce to redefine comfort. Create a sanctuary of relaxation each night and wake up rejuvenated and ready to conquer the day. Trust in Serta's heritage of superior sleep products and indulge in the unparalleled quality of life-enhancing rest!
Serta is proud to be the manufacturer of the World’s Best Mattress™. Their commitment to quality has made them a leader in the industry, and they look forward to helping you find the right mattress so you can get a better night’s sleep for years to come.
Visit our Mississauga mattress outlet or Toronto mattress outlet to view Serta mattresses on sale and special deals and outlet pricing offers! All mattresses are brand new, sealed, with full manufacturer’s warranty serviced by National Mattress Outlet.
For more than 80 years, Serta has been making consistent investments into the highest quality and most innovative features to ensure that every mattress set we manufacture delivers superior comfort and support. Throughout its history, Serta has been an industry leader, offering many product “firsts” – including the world’s first-ever “tuftless” mattress. Today, Serta is proud to offer a variety of exclusive features including our patented Advanced Comfort Quilt® and Continuous Support® Innerspring.
We offer FREE DELIVERY to all major cities in Ontario and the surrounding area on orders over $199. A delivery surcharge of $45 applies to orders under $199.
Select your delivery date at checkout (if applicable) and add any special instructions in the order comments (e.g., “Ring Buzzer #1234”). If a date isn’t shown or selected at checkout, you’ll receive an email with scheduling options. Day‑of, you’ll get a text and email with a 2‑hour window and live tracking. Estimates apply to in‑stock items; rural or weather‑affected addresses may require extra time.
Barrie • Innisfil • Orillia • Midland • Collingwood • Bradford • Washago and more
1–3 days on average
Northern & Eastern Ontario
Cobourg • Peterborough • Kawartha Lakes • Minden • Haliburton • Port Perry • Bowmanville and more
1–3 days on average
Western Ontario
London • Stratford • Woodstock • Brantford • Grand Bend • Port Elgin • Tobermory and more
Need delivery outside the GTA?
We also ship to all provinces in Canada at competitive rates (territories excluded). Enter your postal code at the top of the website to see what’s available.
Ready to Sleep Better?
Shop online 24/7 or visit any National Mattress location across Ontario. Spend $199+ and relax—your new mattress will arrive quickly and free of charge locally, or ship fast across Canada.
Where does National Mattress offer free local delivery?
We offer FREE local delivery to major cities across Ontario on orders of $199+. Check the region cards above for specific cities.
Do you ship mattresses across Canada?
Yes. We ship select roll‑packed mattresses to all provinces (YT, NT, NU excluded). Transit times range from 1–2 days in ON & QC to 3–4 days in BC and NL after shipping.
Is next‑day delivery available in the GTA?
Yes. FREE next‑day local delivery is available in many GTA and surrounding areas, subject to inventory and cutoff times.
What if my Ontario local order total is under $199?
A $45 delivery surcharge applies to orders under $199.
How do I schedule or change my delivery date?
Select a date at checkout. If a chosen date isn’t available, you’ll receive an email proposing an alternative—simply reply to reschedule. In‑store purchases can be scheduled at the time of sale.
Will I get tracking updates?
Yes. Local deliveries include day‑of text/e‑mail with a 2‑hour window plus live GPS tracking. Canada‑wide shipments include a courier tracking number once picked up.
Do you deliver to Yukon, Nunavut, or the Northwest Territories?
What type of mattress is this (foam, latex, hybrid) and how does that affect its performance on an adjustable bed?
This mattress uses a specific core type such as foam, latex, or a pocket coil hybrid paired with flexible comfort layers, which helps it bend smoothly on an adjustable base.
See the construction section for details on the core and comfort materials ...
What types of foam are used in this mattress?
This foam mattress uses a combination of support and comfort foams such as high-density base foam, transitional foam, and softer top foams for pressure relief.
See the construction and materials section on the product page for detailed information on...
What type of protector and sheets do you recommend for this mattress?
For this breathable mattress, we recommend a breathable, moisture-wicking mattress protector and deep-pocket, natural-fiber sheets that won't compress the comfort layers excessively.
Check the product recommendations or accessories section for options...
What kind of foams are used in this Serta mattress?
This Serta mattress uses selected comfort and support foams such as conventional polyfoam, memory foam, or gel-infused foam to balance comfort, support, and temperature regulation.
See the product's materials and construction section for detailed information...
How should I care for and clean this mattress?
Use a mattress protector to guard against spills and stains, vacuum the surface occasionally to remove dust, and follow the manufacturer's spot-cleaning instructions for any accidents.
Avoid harsh chemicals or soaking the mattress, and ensure it dries...
Has this foam mattress been tested for emissions or safety standards?
This foam mattress is manufactured to meet applicable safety and flammability regulations, and its foams may be tested for content and emissions.
Check the product details for specific information on any standards, certifications, or safety testing ...
Is this Serta mattress suitable for side, back, or stomach sleepers?
This Serta mattress is built with a specific firmness and support profile that will suit some sleep positions better than others.
Check the comfort description and recommended sleep positions listed in the product details to see whether it is best for...
Is this king mattress good for side sleepers?
Side sleepers usually prefer a mattress that relieves pressure at the shoulders and hips while keeping the spine aligned.
Look for king mattresses described as medium or medium-soft with comfort layers that contour to the body and cushion key pressure...
Can this king mattress be used on a storage bed or platform bed?
Most king mattresses are compatible with platform and storage beds as long as the base provides adequate, even support.
Check the product details for any specific base recommendations and ensure your frame's slats or platform are sturdy and properly...
Do I need a mattress protector for this memory foam mattress?
A mattress protector is strongly recommended for any memory foam mattress.
It helps keep the surface clean, protects against spills and allergens, and can extend the life of the mattress by preventing moisture and debris from breaking down the foam ...
Do I need a mattress protector for a king mattress?
A mattress protector is highly recommended.
It helps keep the king mattress clean by guarding against spills, sweat, dust, and allergens, and it can significantly extend the life of the mattress in primary bedrooms or guest rooms.
Is this Serta mattress better for a primary bedroom or a secondary/guest room?
This mattress offers a specific combination of comfort, support, and durability that may make it ideal for nightly use in a primary bedroom. Review the firmness, build quality, and price point to decide where it best fits in your home.
Is this 10 inch mattress suitable for everyday adult use or only for guests?
This 10 inch mattress is designed for regular nightly use by adults, but it can also serve well in guest rooms. Check the product specifications, firmness, and user reviews to make sure it aligns with your sleep position, body type, and how often it ...
Will this 10 inch mattress feel different from my current thinner mattress?
Yes. A 10 inch mattress typically feels more substantial than a thin mattress, with more noticeable comfort layers and often better pressure relief. If you are upgrading from a 6 or 8 inch model, you may experience increased cushioning and support, especially...
Does this mattress have strong edge support?
This medium-firm mattress is designed with supportive edge features such as reinforced perimeter foam or sturdier edge coils to help reduce roll-off and make it more comfortable to sit or sleep near the edge.
Check the product description for specific...
Where does this mattress sit on your firmness scale?
This mattress is classified as medium-firm within our lineup, meaning it offers more support than our plush models but slightly more cushioning than our firm models.
Check the firmness scale or comfort description on the product page to see exactly ...
What warranty and trial period apply when this mattress is used on an adjustable base?
Yes, we offer a 100 night sleep trial with any mattress purchase.
Has this memory foam mattress been tested for emissions or safety standards?
This memory foam mattress is manufactured to meet applicable safety and flammability regulations, and its foams may be tested for content and emissions.
Check the product details for specific information on any standards, certifications, or safety testing...
Is this foam mattress suitable for side, back, or stomach sleepers?
This foam mattress has a specific firmness and layering profile that will suit some sleep positions better than others.
Check the comfort description and any recommended sleep positions listed in the product details to see whether it is best for side...
Is this king mattress suitable for everyday use in a primary bedroom?
This king mattress is designed for regular nightly use, with a balance of comfort and support suitable for couples or single sleepers who want extra space.
Check the firmness, materials, and customer reviews on the product page to make sure it matches...
How long does it take for a king mattress to fully expand after unboxing?
Most boxed king mattresses expand to near full size within a few hours, but they may continue to relax and reach their final feel over 24-72 hours.
Room temperature, ventilation, and the specific materials can affect expansion time; follow the manufacturer...
Is this memory foam mattress better suited for a primary bedroom or a guest room?
This mattress offers a specific combination of comfort, support, and durability that may make it ideal for nightly use in a primary bedroom. Review the firmness, build quality, and price point to decide where it best fits in your home.
Is there a weight limit for this 10 inch mattress?
Many mattresses list recommended weight guidelines for optimal performance. Check the specifications and warranty on the product page to see if there are any stated weight limits. If you are near or above the recommended range, you may want to consider...
Is this 10 inch mattress a good value for the price?
This 10 inch mattress is designed to balance comfort, support, and affordability. Review the materials, construction details, warranty, and customer reviews on the product page to decide whether its performance and features justify the price for your...
Will standard sheets fit on a 10 inch mattress?
Yes. Most standard fitted sheets are designed to fit a range of mattress depths and will accommodate a 10 inch mattress without issue. If you want a snugger fit, look for sheets with a pocket depth that matches low to medium profile mattresses and elastic...
– 10 Inch Model with Double Layers of Comfort – Serta CoolWick Breathable Cover – PureComfort Gel Foam with PureComfort Foam Support Core – Designed and Built in Canada
In Stock, Ready for Pickup
Not Displayed
Login and Registration Form