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Firm Breathable Mattresses All Mattresses

Firm mattresses give you the most support of our everyday comfort levels — a solid, stable surface that keeps your spine aligned instead of sinking in. Firm is the go-to for back and stomach sleepers, heavier-weight sleepers who need extra support, and anyone looking for orthopedic, back-friendly comfort; side sleepers or those who like a softer feel may prefer our medium or plush options. Choose from tight-top, foam, euro-top and hybrid builds across Sealy, Serta, Beautyrest, Stearns & Foster, iComfort, Tempur-Pedic, Chirofoam and our own NM line — from budget-friendly models at $59 to premium, with free delivery across Canada. • Feel: firm gives a solid, supportive surface with minimal sink-in • Best for: back and stomach sleepers, heavier-weight sleepers, and orthopedic / back-pain support • Consider softer if you sleep on your side or want more cushioning — see our medium or plush options • Constructions: tight-top (most firm beds), foam, euro-top and hybrid • Brands: Sealy, Serta, Beautyrest, Stearns & Foster, iComfort, Tempur-Pedic, Chirofoam, Springwall & NM • Prices: from $59 (budget) to premium — our widest price range • Want the firmest feel? See our extra-firm mattresses
Breathable mattresses are built to move air, not trap it. Through ventilated and open-cell foams, breathable knit and Tencel covers, and pocket-coil airflow, they let heat and moisture escape instead of building up under you — so your sleep surface stays fresher, drier and more comfortable through the night. It's a great fit if you sweat at night, live in a humid climate, or just don't like that stuffy, sunk-in feel. You'll find breathable builds across every brand — Sealy, Serta, Beautyrest, iComfort, Tempur-Pedic, Chirofoam and our own NM line — in foam, hybrid and pocket-coil. Sleep especially hot? See our cooling mattresses for active heat-wicking. Every mattress includes a 365-night sleep trial and free delivery across Canada. • What it means: airflow-focused builds that let heat and moisture escape instead of trapping them • How it works: ventilated/open-cell foams, breathable knit & Tencel covers, pocket-coil airflow • The benefit: a fresher, drier, less stuffy sleep surface • Best for: sweaty sleepers, humid climates, or anyone who dislikes a sunk-in, stuffy feel • Sleep hot? See cooling mattresses; want a steady temp? See temperature-regulating • Across every brand and firmness • Every order: 365-night sleep trial, price-match guarantee & free Canada-wide delivery

Shop a wide range of mattresses from Serta, Beautyrest, Sealy, Tempur-Pedic, Springwall, and Stearns & Foster at National Mattress, available in Single/Twin through King sizes, from budget-friendly to luxury. Choose from innerspring, euro-top, memory foam, hybrid, and latex constructions in four firmness levels from extra firm to plush. Every mattress is manufactured in Canadian factories using CertiPUR-US® certified foams and ships free across Canada with a 365-night sleep trial, price match guarantee, and coverage under the manufacturer warranty terms.

Firm Breathable Mattresses All Mattresses
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  • Beautyrest 15-inch firm pillow-top mattress, tall profile, grey quilted top with teal swirls, charcoal sides Beautyrest Mattress Collection Logo
    • 875 Beautyrest® Pocketed Coil Technology
    • Beautyrest® ActiveResponse Memory Foam
    • SurfaceTouch™ Gel Memory Foam
    • Beautyrest® Medium+Firm Gel Foam
    • InfiniCool™ Technology
    • Beautyrest® Antimicrobial Fibre Technology
    Single/Twin $917
    Twin XL In stock for fast delivery $974
    Double/Full $989
    Queen $1,034
    Compare at $2,499
    King $1,199
    Online availability icon In-Stock Only 2 left!
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  • Sealy Posturepedic Luxury 13.5-inch firm hybrid tight-top King mattress, navy swirl cover, charcoal side Sealy Posturepedic Luxury Mattress Logo
    • SealyMAX™ Core System featuring SealyResponse™ PRO & SolidSupport™ Pocket Coils
    • GelSense™ MAX Memory Foam
    • SealySupport™ Gel HD Foam
    • SupremeLoft™ Quilt featuring Silk & Wool
    • SealyCool™ Fabric
    • SolidEdge™ PRO Coil Edge
    Twin XL In stock for fast delivery $929
    Double/Full $943
    Queen $1,054
    Compare at $2,499
    King $1,307
    Online availability icon In-Stock Only 2 left!
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  • Springwall Luxury Chiropractic 14.5-inch firm euro-top mattress, tan crown, grey sides, copper piping Springwall H2 Chiropractic Luxury Mattress Logo
    • 2400 7-Zoned Chiropractic® Pocket Coils
    • Luxurious Surface Fabric & Phase-Changing Properties
    • AIRWAYS™ Specialty Foam
    • HD Bio Comfort Foam
    • Handcrafted and Individually Signed For Authenticity
    Single/Twin $762
    Twin XL In stock for fast delivery $941
    Double/Full In stock for fast delivery $956
    Queen In stock for fast delivery $1,063
    Compare at $2,299
    King In stock for fast delivery $1,432
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  • SERTA Perfect Sleeper 13" Firm Smooth Top Mattress, cream-and-grey brushed knit top, navy geometric-ring side panel Serta Perfect Sleeper Premium Mattress Logo
    • 1050 3-Zoned Coil System
    • CoolFeel™ Plus Fabric
    • Cool Twist® Gel Memory Foam
    • Serta® Support Foam
    • Touch-of-Wool TempFibre
    • 10 Year Warranty
    • Made In Canada
    Single/Twin $959
    Twin XL In stock for fast delivery $1,010
    Double/Full $1,026
    Queen $1,078
    Compare at $2,599
    King $1,244
    Online availability icon In-Stock Only 3 left!
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  • Serta Perfect Sleeper Premium 15-inch firm pillow-top, deep-blue burst quilting, charcoal sides Serta Perfect Sleeper Premium Mattress Logo
    • 1000 Series 3-Zoned Coil System
    • CoolFeel Fabric™
    • Serta® Antimicrobial Fibre
    • Cool Twist® Gel Memory Foam
    • Serta® Support Foam
    • Designed and Made in Canada
    Single/Twin SOLD OUT
    Twin XL SOLD OUT
    Double/Full SOLD OUT
    Queen SOLD OUT
    Compare at $2,299
    King SOLD OUT
    Online availability icon Out Of Stock
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  • Beautyrest Hospitality 12-inch luxury-firm tight-top mattress, flat white quilted top, grey piping Beautyrest Hospitality Mattres Logo
    • Beautyrest® Pocketed Coil® Technology
    • Silver-Enhanced Antimicrobial Fiber Cover
    • DualCool™ Performance Layer
    • AirCool® Gel-Infused Foam
    • 10 Year Warranty
    • Made In Canada
    Twin XL In stock for fast delivery $773
    Compare at $2,499
    Online availability icon In-Stock Only 1 left!
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  • SERTA® Perfect Sleeper® 15.5" Firm Euro Top Mattress - 1 Serta Perfect Sleeper Premium Mattress Logo
    • 1050 3-Zoned Coil System
    • CoolFeel™ Plus Fabric
    • QuiltLoft™ Memory Foam
    • Cool Twist® Gel Memory Foam
    • Serta® Support Foam
    • 10 Year Warranty
    • Made In Canada
    Single/Twin $1,037
    Twin XL In stock for fast delivery $1,089
    Double/Full $1,106
    Queen $1,159
    Compare at $2,799
    King $1,326
    Online availability icon In-Stock Only 3 left!
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  • Serta Perfect Comfort X 13-inch firm tight-top mattress, charcoal cover, black-white feather quilt Serta Perfect Comfort X Luxury Mattress Logo
    • 1250 Series 5 ZoneActive™ Pocket Coil System
    • Perfect Conform™ Graphite Memory Foam
    • CoolFeel Fabric™
    • QuiltLoft™ Memory Foam
    • PerfectPure™ Fibre
    • Designed and Made in Canada
    Twin XL In stock for fast delivery $1,002
    Double/Full $1,089
    Queen $1,178
    Compare at $2,899
    King $1,461
    Online availability icon In-Stock Only 4 left!
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  • Beautyrest World Class 12.5-inch firm hybrid mattress, low-profile teal chevron tight-top, grey sides Beautyrest World Class Mattress Collection Logo
    • 1000 Beautyrest® Pocketed Coil Technology
    • Beautyrest® ActiveResponse Memory Foam
    • Beautyrest® Firm Gel Foam
    • World Class Relief™ HD Foam
    • InfiniCool™ Technology
    Twin XL In stock for fast delivery $1,125
    Double/Full In stock for fast delivery $1,142
    Queen In stock for fast delivery $1,196
    Compare at $2,899
    King $1,363
    Online availability icon In-Stock Only 6 left!
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  • Beautyrest World Class 13-inch tight top firm mattress, angled view with teal top and purple trim Beautyrest World Class Mattress Collection Logo
    • 1000 Beautyrest® Pocketed Coil Technology
    • Beautyrest® ActiveResponse Memory Foam
    • SurfaceTouch™ Gel Memory Foam
    • World Class Relief™ HD Foam
    • InfiniCool™ MAX Technology
    • Beautyrest® Natural Lux Fibre Technology
    Single/Twin In stock for fast delivery $969
    Twin XL In stock for fast delivery $1,196
    Double/Full In stock for fast delivery $1,214
    Queen In stock for fast delivery $1,270
    Compare at $2,999
    King $1,438
    Online availability icon In-Stock Only 8 left!
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  • Beautyrest World Class 14.5-inch firm tight-top mattress, dark teal quilted top, charcoal sides with blue piping Beautyrest World Class Mattress Collection Logo
    • 1000 Beautyrest® Pocketed Coil Technology
    • 2X Beautyrest® ActiveResponse Memory Foam
    • SurfaceTouch™ Gel Memory Foam
    • World Class Relief™ HD Foam
    • InfiniCool™ MAX Technology
    • Beautyrest® Natural Lux Fibre Technology
    Single/Twin In stock for fast delivery $1,220
    Twin XL In stock for fast delivery $1,268
    Double/Full In stock for fast delivery $1,287
    Queen $1,351
    Compare at $3,199
    King $1,513
    Online availability icon In-Stock Only 7 left!
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  • BEAUTYREST® Quintessence™ 13" Tight Top Firm Mattress - 1 Beautyrest Quintessence Mattress Collection Logo
    • T3 Precision Support System™
    • WinterCool™ Performance Fabric
    • Quilted Gel Memory Foam
    • Graphite Memory Foam
    • Beautyrest® Firm Comfort Foam
    • 10 Year Warranty
    • Made In Canada
    Single/Twin $1,255
    Twin XL In stock for fast delivery $1,283
    Double/Full $1,303
    Queen $1,367
    Compare at $3,299
    King $1,505
    Online availability icon In-Stock Only 7 left!
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How to Choose a Mattress

Choosing a mattress comes down to three decisions: what holds you up, how firm it feels, and what size fits your room and the people in the bed. Everything else follows from those. The support layer underneath determines how the bed behaves over years of use, while the comfort layers on top decide how it feels on the first night, and the two are worth judging separately. National Mattress carries innerspring, hybrid, memory foam and latex construction from Sealy, Serta, Beautyrest, Stearns & Foster, Tempur-Pedic, MLILY, Chirofoam, Springwall, Marshall Mattress, Evergreen and our own NM line.

Firmness is a fit rather than a quality rating. Side sleepers usually want medium or plush, so the shoulder and hip can sink far enough to keep the spine straight. Back sleepers usually want medium to firm, which fills the lumbar curve. Stomach sleepers want the firm end, so the hips are not allowed to drop below the ribs, and extra firm belongs there and to heavier sleepers. If you share the bed and your answers differ, a pocketed coil support system limits how much of your movement reaches the other side, and choosing a larger size does more for a shared bed than any single feature. Firmness on our mattresses runs extra firm, firm, medium and plush.

🛏 Coil, Foam, Hybrid or Latex

In a pocket coil bed each spring sits in its own fabric pocket and compresses on its own, so far less of your movement reaches the other side. A connected coil unit links the springs together for a firmer, more uniform surface at a lower price. All-foam beds contour closely and make no noise. Latex is springier than memory foam and does not hold heat the same way.

💤 Firmness by Sleep Position

Side sleepers need the surface to give at the shoulder and hip. Back sleepers want medium to firm, enough to fill the lumbar curve without flattening it. Stomach sleepers want the firm end, which keeps the hips level with the ribs. If you move between positions all night, medium is the safest place to start. Body weight shifts this too: a heavier sleeper compresses any comfort layer further and generally reads a mattress as softer than a lighter sleeper does.

👥 Sharing the Bed

Two things decide whether a shared bed works: motion transfer and edge support. Pocketed coils and a foam-encased perimeter mean far less of your movement reaches the other side, and they keep the outer few inches usable rather than collapsing when you sit on them. If one of you sleeps hot, that is a materials question, and it is worth solving on the comfort layer rather than compromising on firmness.

📏 Get the Size Right First

Size is the one decision you cannot adjust later with a topper. Measure the room, then measure the route in: stairwell turns, doorways and elevator depth are what actually stop a delivery. A queen suits most couples, a king buys shoulder room, and twin XL is the length growing teenagers and taller single sleepers need.

Frequently Asked Questions About Choosing a Mattress

How do I know which firmness I need?
Start from the position you fall asleep in. Side sleepers generally do best on medium or plush, because the shoulder and hip need somewhere to go before the spine can stay neutral. Back sleepers generally do best on medium to firm, which fills the lumbar curve. Stomach sleepers want the firm end, which stops the hips sinking below the ribs. Combination sleepers should start at medium. Your body weight matters as well, since a heavier sleeper reads the same mattress as softer than a lighter one does.
What is the difference between pocket coils and a connected coil unit?
In a pocket coil mattress every spring sits in its own fabric pocket and compresses independently, so far less of one sleeper's movement reaches the other side. A connected coil unit links the springs together instead, and that is a family: Bonnell laces separate hourglass coils with helical wire, and only a continuous unit is bent from a single strand. That makes for a firm, uniform, durable surface and usually a lower price, but more of any movement travels across the bed.
Is a hybrid better than an all-foam mattress?
Neither is better outright, they fail differently. A hybrid puts foam or latex comfort layers over a coil support core, so it gives you contouring with more bounce, stronger edges and more airflow through the middle of the bed. An all-foam mattress contours more closely, isolates motion almost completely and is silent, but it warms up more, and gel or graphite infusion only slows the warm-up; sustained cooling comes from airflow. Hot sleepers and people who dislike a sinking feeling usually prefer a hybrid.
How long should a mattress last before I replace it?
Watch the mattress rather than the calendar. The signals that matter are a visible dip where you sleep, waking with stiffness that eases once you are up, or sleeping noticeably better away from home. Construction changes the answer a good deal, since a dense foam core and a pocket coil unit age differently from an entry-level foam bed. Our guide to mattress lifespan by type sets out what to expect from each.
Do I need a new boxspring or foundation as well?
Usually yes if the old one is sagging, because a mattress can only be as flat as what it sits on, and a dip underneath will show through a new mattress within months. Foam and hybrid mattresses want a solid or closely slatted platform, and slats spaced too widely let the mattress bow between them. If you are considering an adjustable base instead, the mattress has to be able to flex, which not every construction can do.
Which mattress size should I buy?
Work backwards from the room and the sleepers. A queen is the usual choice for two adults and fits most bedrooms with space to walk around the bed. A king adds width for couples who want to move without touching, and a split king lets each side sit on its own adjustable base. Twin XL adds length for taller sleepers. Our guide to standard Canadian mattress sizes lists the measurements.

Not Sure Where to Start?

Answer a few questions about how you sleep and we will narrow the field for you, or talk it through with someone whose pay does not depend on which mattress you choose. Our non-commissioned sleep experts can put two beds side by side and tell you what actually separates them.

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