Firm Great Value Back Sleeper Adjustable Base Compatible Blue All Mattresses

Firm mattresses give you a solid, supportive surface with minimal sink — keeping your spine aligned and making it easier to move and get in and out of bed. They're the top choice for back and stomach sleepers, heavier bodies, and anyone who finds softer beds uncomfortable. Compare every firm option below by brand, profile, and price.
Great Value mattresses deliver dependable comfort and support at our most affordable prices — a smart pick for guest rooms, kids' rooms, students, and budget-minded shoppers. Compare every great-value option below by brand, type, and feel.
Back sleepers do best on a mattress that supports the lower back while gently following the spine's natural curve — typically a medium to medium-firm feel. The options below balance support and pressure relief for back sleepers. Compare them by brand, feel, and profile.
These mattresses are built to flex with adjustable bed bases — bending smoothly at the head and foot without damage — so you can raise, recline, and find your ideal position. Compare every adjustable-base-compatible option below by brand, type, and feel.

Shop 200+ mattresses from Serta, Beautyrest, Sealy, Tempur-Pedic, Springwall, and Stearns & Foster at National Mattress — available in Single/Twin through King sizes from $99 to $6,640. 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 manufacturer warranty coverage up to 25 years.

Firm Great Value Back Sleeper Adjustable Base Compatible Blue All Mattresses
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  • SEALY® Essentials 6" Firm Tight Top Foam Mattress SEALY® Essentials 6" Firm Tight Top Foam Mattress brand icon
    • CleanProtect™ Fabric
    • SealyLoft™ Quilt with Moisture Wicking Fibres
    • CertiPUR-US™ SealySupport™ HD Foam
    • CertiPUR-US™ SealySupport™ HD Core
    • SealySupport™ HD Foam
    Single/Twin In stock for fast delivery $208
    Twin XL In stock for fast delivery $243
    Double/Full $248
    Queen In stock for fast delivery $298
    Compare at $899
    King In stock for fast delivery $490
    Online availability icon In-Stock
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 8
    Pickup available icon Only Pickup available to
  • SPRINGWALL® Comfort Pockets® Elite 14" Firm Tight-Top Mattress SPRINGWALL® Comfort Pockets® Elite 14" Firm Tight-Top Mattress brand icon
    • 884 Full Perimeter Comfort Pockets® (Pocket Coils)
    • Cool Touch Stretch Knit Sleep Surface
    • Bio Comfort Quilted Stretch knit surface
    • HD Medium & Firm Layers of Bio Comfort Foam
    • Made In Canada
    Single/Twin In stock for fast delivery $369
    Twin XL In stock for fast delivery $494
    Double/Full In stock for fast delivery $501
    Queen In stock for fast delivery $565
    Compare at $1,299
    RV Short Queen In stock for fast delivery $729
    King In stock for fast delivery $757
    Online availability icon In-Stock
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 8
    Pickup available icon Only Pickup available to
  • SEALY® Essentials 11.5" Firm Eurotop Mattress SEALY® Essentials 11.5" Firm Eurotop Mattress brand icon
    • CleanProtect™ Fabric
    • SealyLoft™ Quilt with Moisture Wicking Fibres
    • CertiPUR-US™ SealySupport™ HD Foam
    • Posture Touch® Pocket Coils
    • EssentialEdge™ Foam Support
    Single/Twin $379
    Twin XL In stock for fast delivery $385
    Double/Full $389
    Queen In stock for fast delivery $399
    Compare at $1,399
    King $699
    Online availability icon In-Stock
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 7
    Pickup available icon Only Pickup available to
  • SERTA® Classic® 10" Firm Tight Top Mattress SERTA® Classic® 10" Firm Tight Top Mattress brand icon
    • 800 Edition Custom Support Coil System
    • 3 Zone Body Support
    • Serta® Support Foam
    • Serta® Anti-Microbial Fibre Technology
    • Serta® Best Edge® Foam Encasement
    • Designed and Made in Canada
    Single/Twin $449
    Twin XL In stock for fast delivery $469
    Double/Full $479
    Queen $499
    Compare at $1,499
    King $699
    Online availability icon In-Stock Only 4 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 7
    Pickup available icon Only Pickup available to
  • SEALY® Essentials 6" Firm Tight Top Foam Mattress - Single/Twin SEALY® Essentials 6" Firm Tight Top Foam Mattress - Single/Twin brand icon
    • CleanProtect™ Fabric
    • SealyLoft™ Quilt with Moisture Wicking Fibres
    • CertiPUR-US™ SealySupport™ HD Foam
    • CertiPUR-US™ SealySupport™ HD Core
    • SealySupport™ HD Foam
    Single/Twin In stock for fast delivery $208
    Compare at $699
    Online availability icon In-Stock Only 5 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 8
    Pickup available icon Only Pickup available to
  • SEALY® Essentials 6" Firm Tight Top Foam Mattress - Twin XL SEALY® Essentials 6" Firm Tight Top Foam Mattress - Twin XL brand icon
    • CleanProtect™ Fabric
    • SealyLoft™ Quilt with Moisture Wicking Fibres
    • CertiPUR-US™ SealySupport™ HD Foam
    • CertiPUR-US™ SealySupport™ HD Core
    • SealySupport™ HD Foam
    Twin XL In stock for fast delivery $243
    Compare at $799
    Online availability icon In-Stock Only 1 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 7
    Pickup available icon Only Pickup available to
  • SEALY® Essentials 6" Firm Tight Top Foam Mattress - Double/Full SEALY® Essentials 6" Firm Tight Top Foam Mattress - Double/Full brand icon
    • CleanProtect™ Fabric
    • SealyLoft™ Quilt with Moisture Wicking Fibres
    • CertiPUR-US™ SealySupport™ HD Foam
    • CertiPUR-US™ SealySupport™ HD Core
    • SealySupport™ HD Foam
    Double/Full $248
    Compare at $799
    Online availability icon Backorder Available
    In-Store availability icon On Display:
    Estimated delivery icon Estimated free delivery on Tuesday, Jun 23
  • SEALY® Essentials 6" Firm Tight Top Foam Mattress - Queen SEALY® Essentials 6" Firm Tight Top Foam Mattress - Queen brand icon
    • CleanProtect™ Fabric
    • SealyLoft™ Quilt with Moisture Wicking Fibres
    • CertiPUR-US™ SealySupport™ HD Foam
    • CertiPUR-US™ SealySupport™ HD Core
    • SealySupport™ HD Foam
    Queen In stock for fast delivery $298
    Compare at $899
    Online availability icon In-Stock Only 5 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 7
    Pickup available icon Only Pickup available to
  • SPRINGWALL® Comfort Pockets® Elite 14" Firm Tight-Top Mattress - Single/Twin SPRINGWALL® Comfort Pockets® Elite 14" Firm Tight-Top Mattress - Single/Twin brand icon
    • 884 Full Perimeter Comfort Pockets® (Pocket Coils)
    • Cool Touch Stretch Knit Sleep Surface
    • Bio Comfort Quilted Stretch knit surface
    • HD Medium & Firm Layers of Bio Comfort Foam
    • Made In Canada
    Single/Twin In stock for fast delivery $369
    Compare at $899
    Online availability icon In-Stock Only 3 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 8
    Pickup available icon Only Pickup available to
  • SEALY® Essentials 11.5" Firm Eurotop Mattress - Single/Twin SEALY® Essentials 11.5" Firm Eurotop Mattress - Single/Twin brand icon
    • CleanProtect™ Fabric
    • SealyLoft™ Quilt with Moisture Wicking Fibres
    • CertiPUR-US™ SealySupport™ HD Foam
    • Posture Touch® Pocket Coils
    • EssentialEdge™ Foam Support
    Single/Twin $379
    Compare at $1,199
    Online availability icon Backorder Available
    In-Store availability icon On Display:
    Estimated delivery icon Estimated free delivery on Tuesday, Jun 23
  • SEALY® Essentials 11.5" Firm Eurotop Mattress - Twin XL SEALY® Essentials 11.5" Firm Eurotop Mattress - Twin XL brand icon
    • CleanProtect™ Fabric
    • SealyLoft™ Quilt with Moisture Wicking Fibres
    • CertiPUR-US™ SealySupport™ HD Foam
    • Posture Touch® Pocket Coils
    • EssentialEdge™ Foam Support
    Twin XL In stock for fast delivery $385
    Compare at $1,199
    Online availability icon In-Stock
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 7
    Pickup available icon Only Pickup available to
  • SEALY® Essentials 11.5" Firm Eurotop Mattress - Double/Full SEALY® Essentials 11.5" Firm Eurotop Mattress - Double/Full brand icon
    • CleanProtect™ Fabric
    • SealyLoft™ Quilt with Moisture Wicking Fibres
    • CertiPUR-US™ SealySupport™ HD Foam
    • Posture Touch® Pocket Coils
    • EssentialEdge™ Foam Support
    Double/Full $389
    Compare at $1,299
    Online availability icon Backorder Available
    In-Store availability icon On Display:
    Estimated delivery icon Estimated free delivery on Tuesday, Jun 23

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