Firm Medium Natural & Organic Mattresses Adjustable Bed Base Friendly Mattresses with Cooling Materials
Medium-firmness mattresses — often called medium-firm — sit right between plush and firm, which is why they're the most popular and versatile feel we carry. You get enough cushioning to relieve pressure with enough support to keep your spine aligned, making medium a safe choice for back sleepers, combination sleepers who change positions through the night, and couples who need a compromise between two preferences. Shop medium models from Sealy, Serta, Beautyrest, Stearns & Foster, iComfort and Tempur-Pedic across memory foam, hybrid, euro-top, pillow-top and tight-top builds — with free delivery across Canada. • Feel: medium sits between plush and firm — balanced and the most versatile of our four comfort levels • Also called "medium-firm" — the middle of the firmness scale • Best for: back sleepers, combination sleepers, couples, and most body types • Consider plush if you sleep on your side; firm if you sleep on your stomach or want more support • Constructions: euro-top, tight-top, pillow-top, memory foam and hybrid • Brands: Sealy, Serta, Beautyrest, Stearns & Foster, iComfort, Tempur-Pedic, Springwall & NM • Prices: from $171 to premium
For a cleaner, more eco-conscious sleep, our natural and organic mattresses are built with materials you can feel good about — natural Talalay latex, organic cotton and wool covers, plant-based and soy-derived foams, and recycled fibres, with low-VOC, CertiPUR-US® certified components. They're a great fit if you want fewer synthetic chemicals, more sustainable materials, or a naturally breathable, hypoallergenic feel. You'll find genuinely certified-organic options — like GOTS organic cotton and organic latex from Natura and Evergreen — alongside natural-material and eco-friendly builds from Serta iComfort ECO, Sealy, Beautyrest and our own NM line. Every mattress includes a 365-night sleep trial and free delivery across Canada. • What "natural materials" means: Talalay latex, organic cotton & wool, plant-based/soy foams and recycled fibres • Certified-organic options: GOTS organic cotton and organic latex (Natura, Evergreen) • Eco-friendly builds: Serta iComfort ECO (REPREVE recycled) plus low-VOC, CertiPUR-US® foams • Best for: shoppers who want fewer synthetic chemicals, sustainable materials, or a naturally breathable feel • Looking specifically for latex? See our latex mattresses • Every order: 365-night sleep trial, price-match guarantee & free Canada-wide delivery
Shop adjustable base friendly mattresses from Beautyrest, Serta, Sealy, Tempur-Pedic, Springwall, iComfort, and Stearns & Foster at National Mattress — 169+ models in memory foam, hybrid, latex, eurotop, and tight-top constructions from $59 to $6,640. Every mattress in this collection is manufacturer-verified to flex and articulate with an adjustable base without voiding the warranty. Available in Twin through King sizes with firmness levels from extra firm to plush, all built with CertiPUR-US® certified foams, including Canadian-made options. Free delivery is available, along with a 365-night sleep trial and 5–15 year warranty coverage.
Shop cooling mattresses from Serta, Sealy, Beautyrest, Tempur-Pedic, iComfort, Springwall, and more at National Mattress, featuring gel-infused foam, graphite-infused foam, naturally breathable latex, and coil airflow systems in a wide range of models across every size from Single/Twin to King. Prices run from budget-friendly to luxury, with comfort levels from extra firm to plush. Every cooling mattress is CertiPUR-US® certified, manufactured in Canadian factories, and ships with free express delivery, a 365-night sleep trial, and manufacturer warranty coverage.
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How Cooling Materials Work in Modern Mattresses
A mattress’s cooling performance depends on its overall construction. Gel infusion can delay the initial warming of foam by increasing thermal mass; it does not provide a continuing path for heat to leave the bed. Natural latex has an open-cell structure that promotes continuous airflow without any added chemicals, and hybrid mattresses with individually wrapped coils create air channels beneath the comfort layers that vent heat away from the sleep surface.
When choosing a cooling mattress, match the technology to your sleep style. Hot sleepers who prefer a conforming feel can compare memory foam models from Serta, Serta iComfort, or Tempur-Pedic, paying attention to airflow and cover construction. If you want natural breathability without synthetic foams, Natura and Sealy Posturepedic Natural Origins offer latex-based options. Budget-conscious shoppers can find cooling gel foam mattresses from Springwall and NM. All cooling mattresses at National Mattress are manufactured in Canadian factories 🍁 and ship with free express delivery across Canada.
Gel-Infused Foam
Thermal-conductive gel beads absorb and dissipate body heat. Found in many models from Serta, Sealy, Beautyrest, and Springwall.
Coil Airflow Systems
Individually wrapped pocket coils in innerspring and hybrid mattresses create air channels that continuously vent heat from the core.
Graphite & Copper Infusions
Compare the complete construction of Serta iComfort and Beautyrest models. An infusion name alone does not establish sustained cooling performance.
Cooling Cover Fabrics
Phase-change and moisture-wicking cover materials feel cool to the touch and regulate surface temperature throughout the night.
Frequently Asked Questions About Cooling Mattresses
What type of cooling mattress is best for hot sleepers?
What is the difference between gel foam, graphite foam, and latex for cooling?
How much do cooling mattresses cost at National Mattress?
Are cooling mattresses available in all sizes?
Do cooling mattresses come with a sleep trial?
Can I use a cooling mattress on an adjustable bed base?
Not Sure Which Cooling Technology Is Right for You?
Our non-commissioned sleep experts can match you with the right cooling mattress based on your sleep position, body temperature, and budget, no sales pressure.
Upgrade your sleep at National Mattress
Discover a mattress that transforms your sleep into a truly rejuvenating experience. We offer a wide variety of options to suit every sleep style and preference, ensuring a better night's sleep.
Why Choose Us?
- Variety: From plush to firm, we have options for every body type and sleep style.
- Quality: Trusted brands and top-notch materials for long-lasting comfort.
- Sleep Trials & Warranties: Enjoy peace of mind with flexible trials and warranties.
- Expert Advice: Get personalized recommendations from our sleep specialists.
Mattress Selection Includes
- Memory Foam: Contours to your body for personalized comfort and pressure relief.
- Hybrid: Combines responsive springs with foam for balanced support and comfort.
- Innerspring: Provides firm support, bounce, and cooling airflow.
- Latex: Hypoallergenic, eco-friendly, and exceptionally comfortable.
- Adjustable Beds: Customize your sleep position for optimal comfort.
