King Luxury Back Sleeper Temperature Regulating All Mattresses

King mattresses measure 76" × 80" — the widest standard size, giving each partner the same personal space as a twin. They're the top choice for couples who want maximum room, families who co-sleep, and larger master bedrooms. Compare every king option below by brand, feel, and price.
Luxury mattresses are our finest — the best materials, advanced support systems, and premium comfort layers from our top luxury brands. They're for shoppers who want the ultimate in comfort, durability, and craftsmanship and won't compromise. Compare every luxury 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.
Temperature-regulating mattresses balance heat and airflow to hold a neutral, consistent sleep temperature through the night — not too hot, not too cold. They suit sleepers whose temperature swings. Compare every 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.

King Luxury Back Sleeper Temperature Regulating All Mattresses
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  • SPRINGWALL® Luxury Chiropractic® 13.5" Firm Tight-Top Mattress - King SPRINGWALL® Luxury Chiropractic® 13.5" Firm Tight-Top Mattress - King brand icon
    • 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
    King $1,353
    Compare at $2,999
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  • OPEN BAG - SERTA® iComfort® PRO 14.5" Firm Euro Top Latex Mattress - King OPEN BAG - SERTA® iComfort® PRO 14.5" Firm Euro Top Latex Mattress - King brand icon
    • CoolFeel™ Pro System
    • 5 ZoneResponse™ Design
    • 2X Graphite-Infused True Response™ Latex Foam
    • 2X True Response™ Latex Foam
    • Derived from 100% Natural Latex
    • 100% Canada Assembled
    King $1,813
    Compare at $6,199
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  • STEARNS & FOSTER® Estate® 13.5" Firm Tight Top Mattress - King STEARNS & FOSTER® Estate® 13.5" Firm Tight Top Mattress - King brand icon
    • Indulge Quilt With Silk & Wool Fibres
    • PrecisionMatch™ Memory Foam
    • PrimaSense™ Gel Infused Comfort Layers
    • Intellicoil® Innerspring (Pocket Coil)
    • Handmade By Certified Master Craftsman
    King $2,100
    Compare at $3,699
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  • SPRINGWALL® H2 Black Chiropractic® 14" Firm Tight-Top Mattress - King SPRINGWALL® H2 Black Chiropractic® 14" Firm Tight-Top Mattress - King brand icon
    • 3250 7-Zoned Chiropractic® Pocket Coils
    • Graphite Ice Memory Foam
    • AIRWAYS™ Specialty Foam
    • H2 Comfort Foam
    • CoreBalance™ Support System
    • Cold PE Technology Premium Fabric
    • Handcrafted and Individually Signed For Authenticity
    King $2,299
    Compare at $4,399
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  • SERTA® iComfort® 14" Firm Memory Foam Mattress - King SERTA® iComfort® 14" Firm Memory Foam Mattress - King brand icon
    • CoolFeel™ Fabric
    • 5 ZoneResponse™ Design
    • Perfect Conform™ Graphite Memory Foam
    • Deep Reaction® Max Gel Memory Foam
    • CertiPUR-US® certified foams.
    • 100% Canada Assembled
    King $2,499
    Compare at $4,499
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  • SPRINGWALL® H2 Black Chiropractic® 15" Luxury Firm Euro Top Mattress - King SPRINGWALL® H2 Black Chiropractic® 15" Luxury Firm Euro Top Mattress - King brand icon
    • 3250 7-Zoned Chiropractic® Pocket Coils
    • Graphite Ice Memory Foam
    • AIRWAYS™ Specialty Foam
    • H2 Comfort Foam
    • CoreBalance™ Support System
    • Cold PE Technology Premium Fabric
    • Handcrafted and Individually Signed For Authenticity
    King $2,599
    Compare at $4,799
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  • STEARNS & FOSTER® Estate® 16" Firm Euro Top Mattress - King STEARNS & FOSTER® Estate® 16" Firm Euro Top Mattress - King brand icon
    • Indulge Quilt With Silk & Wool Fibres
    • PrecisionMatch™ Memory Foam
    • PrimaSense™ Gel Infused Comfort Layers
    • Additional PrimaMatch™ Memory Foam
    • Intellicoil® Innerspring (Pocket Coil)
    • Handmade By Certified Master Craftsman
    King $2,650
    Compare at $4,099
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  • EVERGREEN 100% Certified Organic 10" Firm Latex Mattress - King EVERGREEN 100% Certified Organic 10" Firm Latex Mattress - King brand icon
    • 100% Certified Natural Organic Latex
    • Global Organic Latex Standard – Certified 100% Natural
    • Eco-Institute – No Fillers or Hazardous Particles
    • Oeko-Tex Standard 100 – No Harmful Substances
    • ABC Research Laboratories – Certified Antimicrobial
    King $2,650
    Compare at $4,899
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  • EVERGREEN 100% Certified Organic 10" Medium Firm Latex Mattress - King EVERGREEN 100% Certified Organic 10" Medium Firm Latex Mattress - King brand icon
    • 100% Certified Natural Organic Latex
    • Global Organic Latex Standard – Certified 100% Natural
    • Eco-Institute – No Fillers or Hazardous Particles
    • Oeko-Tex Standard 100 – No Harmful Substances
    • ABC Research Laboratories – Certified Antimicrobial
    King $2,650
    Compare at $4,899
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  • BEAUTYREST® Centennial® 16.5" Super Pillow Top Medium-Firm Mattress - King BEAUTYREST® Centennial® 16.5" Super Pillow Top Medium-Firm Mattress - King brand icon
    • 2850 T3 Triple Stranded Pocketed Coil® and Micro Coil Technology
    • SurfaceTouch™ Gel Memory Foam
    • Self-Response™ Latex
    • Micro Diamond™ Memory Foam
    • Beautyrest® Gel Memory Foam
    • Sleep Climate™ Surface enhanced with cooling yarn
    King $3,340
    Compare at $5,099
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  • SERTA® iComfort® PRO 12.5" Firm Latex Mattress - King SERTA® iComfort® PRO 12.5" Firm Latex Mattress - King brand icon
    • CoolFeel™ Pro System
    • 5 ZoneResponse™ Design
    • Graphite-Infused True Response™ Latex Foam
    • True Response™ Latex Foam Core
    • Derived from 100% Natural Latex
    • 100% Canada Assembled
    King $6,999
    Compare at $10,299
    Online availability icon In-Stock Only 1 left!
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