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Firm Compatible with Adjustable Bed Edge Support Mattresses Adjustable Bed Base Friendly All

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
Edge support mattresses are reinforced around the perimeter so the edge feels as solid as the middle — you can sleep right up to the side without that sinking, roll-off feeling, sit on the edge to get dressed without it caving, and use the full surface of the bed. It's a feature that matters most for couples sharing the space, anyone who sits on the edge to get in and out of bed, and heavier-weight sleepers. These are mostly our pocket-coil and hybrid mattresses with full-perimeter coils or foam-encased edges — from Springwall (Full Perimeter Comfort Pockets), Sealy, Serta, Beautyrest, iComfort, Stearns & Foster and our own NM line. Every mattress includes a 365-night sleep trial and free delivery across Canada. • What it does: a reinforced perimeter so the edge stays firm — no sinking or rolling off • Why it matters: more usable sleep surface, easier to sit on the edge and get in and out of bed • Best for: couples sharing space, anyone who sits on the edge, and heavier-weight sleepers • How it works: full-perimeter pocket coils or foam-encased edges (mostly coil & hybrid; all-foam edges are softer) • Brands: Springwall (Full Perimeter Comfort Pockets), Sealy, Serta, Beautyrest, iComfort, Stearns & Foster & NM • 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.
Firm Compatible with Adjustable Bed Edge Support Mattresses Adjustable Bed Base Friendly All
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  • National Mattress Orthopedic Classic 8-inch firm tight-top mattress, all-white quilted cover with dark piping NM Logo
    • Double Tempered Bonnel Coil with Edge Guard
    • Firm BioComfort™ Foam
    • Center & Lumbar Support
    • Dual Sided Cotton Support Quilt
    • 5 Year Warranty
    • Made In Canada
    Single/Twin In stock for fast delivery $168
    Twin XL In stock for fast delivery $203
    Double/Full In stock for fast delivery $206
    Queen In stock for fast delivery $226
    Compare at $499
    King In stock for fast delivery $266
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  • National Mattress 9.5-inch firm euro-top mattress, white diamond-quilted top with black quilted sides NM Logo
    • Double Tempered Bonnel Coil with Edge Guard
    • Center & Lumbar Support
    • Bio Foam Comfort Layers
    • 5 Year Warranty
    • Made In Toronto, Canada
    Single/Twin In stock for fast delivery $192
    Twin XL In stock for fast delivery $184
    Double/Full In stock for fast delivery $234
    Queen In stock for fast delivery $278
    Compare at $499
    King $396
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  • National Mattress Orthopedic Supreme 13-inch firm tight-top mattress, white top, grey-black diamond sides NM Logo
    • Double Tempered Bonnel Coil with Edge Guard
    • HD+™ High Density Foam
    • Center & Lumbar Support
    • Dual Sided Cotton Support Quilt
    • 10 Year Warranty
    • Made In Canada
    Single/Twin In stock for fast delivery $328
    Twin XL In stock for fast delivery $341
    Double/Full In stock for fast delivery $347
    Queen In stock for fast delivery $427
    Compare at $799
    King In stock for fast delivery $587
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  • Springwall Comfort Pockets 10-inch firm euro-top mattress, plain white quilted top with charcoal diamond-quilted sides Springwall Comfort Pockets Mattress Logo
    • 884 Full Perimeter Comfort Pockets® (Pocket Coils)
    • Bio Foam with Gel
    • Cool Touch Stretch Knit Sleep Surface
    • Bio Comfort Quilted Stretch knit surface
    • Made In Canada
    Single/Twin In stock for fast delivery $265
    Twin XL $340
    Double/Full In stock for fast delivery $345
    RV Short Queen In stock for fast delivery $359
    Queen In stock for fast delivery $398
    Compare at $899
    King In stock for fast delivery $517
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  • Chirofoam 12-inch luxury-firm hybrid mattress, white damask-quilted top, navy diamond-quilted sides Chirofoam Logo
    • Cool Gel Infused Memory Foam
    • Firm Support Chirofoam
    • Pro Lumbar Support
    • Canadian Made 1000 Hi-Loft Pocket Coils
    • 15 Year Warranty
    Single/Twin In stock for fast delivery $442
    Twin XL In stock for fast delivery $499
    Double/Full In stock for fast delivery $569
    Queen In stock for fast delivery $675
    Compare at $1,299
    King $862
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  • NM Orthopedic PLUS 10" Firm Euro Top Mattress - 1 NM Logo
    • 416 Double-Tempered 3-Zone Continuous Coil
    • Reinforced Edge Support
    • 2″ HD+™ High Density Firm Foam
    • Lumbar Support Pad
    • Quilted Cotton/Poly/Foam Euro-Top Cover
    • 10 Year Warranty
    • Made In Canada
    Single/Twin In stock for fast delivery $240
    Twin XL $277
    Double/Full $281
    Queen $318
    Compare at $699
    King In stock for fast delivery $500
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  • NM® Hi-Loft™ 10" Firm Tight Top Mattress NM Hi-Loft Collection Logo
    • 800 3-Zone Quantum Edge Coils
    • Quilted Tight-Top Comfort
    • 1″ Medium-Grade Bio Foam
    • Heat-Treated Cotton Felt Pad
    • Lux Double-Jersey Cover
    • 10-Year Warranty
    • Made In Canada
    Single/Twin In stock for fast delivery $272
    Twin XL In stock for fast delivery $300
    Double/Full $305
    Queen $335
    Compare at $699
    King $516
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  • Springwall 4-inch firm foam bunkie board mattress, smooth black cover, white edge piping Springwall Foam Mattress Collection Logo
    • Bio Comfort Foam Core
    • Microfiber Cover
    • Ideal for Bunk Beds and Children
    • Reduced Motion Transfer
    • Made In Canada
    Single/Twin In stock for fast delivery $109
    Double/Full In stock for fast delivery $149
    Queen In stock for fast delivery $178
    Compare at $399
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  • Sealy Posturepedic 800 Series 11.5-inch firm tight-top mattress, tufted grey-blue speckled top, grey sides Sealy Posturepedic Mattress Logo
    • CleanProtect™ Fabric
    • Quilt Stay True® Quilt with MoistureProtect™ Fibres
    • CertiPUR-US™ SealySupport™ Gel HD Foam
    • Posture Touch® Pocket Coils
    • StableEdge™ HD
    • Targeted Gel HD Foam
    Single/Twin In stock for fast delivery $359
    Twin XL $507
    Double/Full $520
    Queen $588
    Compare at $1,399
    King $849
    Online availability icon In-Stock Only 1 left!
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  • Evergreen 10-inch firm organic latex foam mattress, white channel-quilted tight-top, ribbed sides, sage trim Evergreen Sleep Organic Latex Mattress Collection Logo
    • Open Cell Bio Foam Core
    • Organic Latex Comfort Layer
    • Bio-Foam natural foam content support layers
    • Organic Cotton Quilt
    • 10 Year Warranty
    • Made In Toronto, Canada
    Single/Twin $402
    Twin XL In stock for fast delivery $548
    Double/Full In stock for fast delivery $439
    Queen In stock for fast delivery $643
    Compare at $1,199
    King In stock for fast delivery $842
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  • National Mattress 10-inch firm euro-top mattress, white wave-quilted top with black diamond-patterned sides NM Hi-Loft Collection Logo
    • 1000 Hi-Loft Pocket Coil with Foam Encased Perimiter
    • Cool Gel-infused memory foam
    • Bio-Foam natural foam content reduces your carbon footprint
    • 10 Year Warranty
    • Made In Toronto, Canada
    Single/Twin In stock for fast delivery $296
    Twin XL In stock for fast delivery $382
    Double/Full In stock for fast delivery $388
    Queen In stock for fast delivery $436
    Compare at $799
    King In stock for fast delivery $581
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  • Springwall Chiro Medic 8-inch firm tight-top mattress, white damask top, black sides, grey piping Springwall Chiromedic Mattress Logo
    • 700 Continuous Coil
    • Bio-Foam Comfort Foam
    • Bio Comfort Quilted Stretch knit surface
    • SpringWALL Edge System
    • Pressure Balancing Design
    Single/Twin In stock for fast delivery $179
    Double/Full In stock for fast delivery $251
    Queen $299
    Compare at $699
    King In stock for fast delivery $391
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