King King Split Head Queen Split Head Cooling Mattresses White Mattresses Serta 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.
If you sleep hot, the right mattress can make all the difference. Our cooling mattresses are built to draw heat away from your body and keep you comfortable all night — using cooling technologies like gel-infused memory foam, cool-to-the-touch and phase-change covers, graphite and copper infusions, and breathable pocket-coil airflow. You'll find cooling builds across every brand — Sealy, Serta, Beautyrest, iComfort, Tempur-Pedic, Chirofoam and our own NM line — in foam, hybrid and pocket-coil, from plush to firm. If you wake up sweaty or run warm at night, start here. Every mattress includes a 365-night sleep trial, price-match guarantee and free delivery across Canada. • Best for: hot sleepers, night sweats, or anyone who runs warm • Cooling technologies: gel-infused memory foam, cool-to-the-touch & phase-change covers, graphite/copper infusions, breathable coil airflow • Builds: gel memory foam, hybrid and pocket-coil • Across every brand and firmness, plush to firm • Why it helps: draws heat away and improves airflow so you sleep cooler • Every order: 365-night sleep trial, price-match guarantee & free Canada-wide delivery

Most of our mattresses come in a clean, neutral white or off-white cover — and since that cover sits under your sheets, colour won't change how you sleep. To find the right bed, shop by what actually matters: your size (twin to king), your comfort level (plush, medium, firm), or your preferred type (memory foam, hybrid, pocket coil). Every mattress includes a 365-night sleep trial and free delivery across Canada.

Serta is a globally recognized mattress brand celebrated for its comfort-first designs and sleep innovations. With over 90 years of experience, Serta continues to deliver quality mattresses that Canadians can trust.

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 King Split Head Queen Split Head Cooling Mattresses White Mattresses Serta
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  • SERTA® Classic® 11.5" Extra-Firm Tight Top Mattress
    BEST IN CLASS TOP RATED LIMITED STOCK
    Serta Classic 11.5-inch extra-firm tight-top mattress, blue-white ombre top, navy floral sides SERTA® Classic® 11.5" Extra-Firm Tight Top Mattress brand icon
    • 800 Edition Custom Support Coil System
    • 3 Zone Body Support
    • Cool Twist® Gel Memory Foam + Serta® Support Gel Foam
    • Serta® Anti-Microbial Fibre Technology
    • Serta® Best Edge® Foam Encasement
    • Designed and Made in Canada
    Single/Twin In stock for fast delivery $621
    Twin XL In stock for fast delivery $674
    Double/Full $684
    Queen $718
    Compare at $1,699
    King $885
    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 20
    Pickup available icon Only Pickup available to
  • Serta Classic 12.5-inch medium euro-top mattress, blue-white ombre plush top, navy floral sides SERTA® Classic® 12.5" Medium Euro Top Mattress brand icon
    • 800 Edition Custom Support Coil System
    • 3 Zone Body Support + Serta® Support Gel Foam
    • Cool Twist® Gel Memory Foam + Serta® PillowSoft® Foam
    • Serta® Anti-Microbial Fibre Technology
    • Serta® Best Edge® Foam Encasement
    • Designed and Made in Canada
    Single/Twin $657
    Twin XL In stock for fast delivery $703
    Double/Full $713
    Queen In stock for fast delivery $754
    Compare at $1,799
    King $922
    Online availability icon In-Stock Only 7 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 20
    Pickup available icon Only Pickup available to
  • Serta Classic 12.5-inch luxury-plush euro-top mattress, deep blue-white ombre top, navy floral sides SERTA® Classic® 12.5" Luxury Plush Euro Top Mattress brand icon
    • 800 Edition Custom Support Coil System
    • 3 Zone Body Support
    • Cool Twist® Gel Memory Foam + Serta® PillowSoft® Gel Foam
    • Serta® Anti-Microbial Fibre Technology
    • Serta® Best Edge® Foam Encasement
    • Designed and Made in Canada
    Single/Twin In stock for fast delivery $657
    Twin XL In stock for fast delivery $703
    Double/Full $713
    Queen $754
    Compare at $1,799
    King $922
    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 20
    Pickup available icon Only Pickup available to
  • Serta Perfect Sleeper 10.5-inch firm tight-top mattress, white quilted top, charcoal-navy sides SERTA® Perfect Sleeper® 10.5" Firm Tight Top Mattress - King brand icon
    • 825 Edition Custom Support Coil System
    • CoolFeel Fabric™
    • Gel Band Support
    • Serta® Support Foam
    • PillowSoft® Foam
    • Designed and Made in Canada
    King $825
    Compare at $1,699
    Online availability icon Out Of Stock
    In-Store availability icon On Display:
  • Serta Classic 11.5-inch extra-firm tight-top mattress, blue-white ombre top, navy floral sides SERTA® Classic® 11.5" Extra-Firm Tight Top Mattress - King brand icon
    • 800 Edition Custom Support Coil System
    • 3 Zone Body Support
    • Cool Twist® Gel Memory Foam + Serta® Support Gel Foam
    • Serta® Anti-Microbial Fibre Technology
    • Serta® Best Edge® Foam Encasement
    • Designed and Made in Canada
    King $885
    Compare at $2,099
    Online availability icon Backorder Available
    In-Store availability icon On Display:
    Estimated delivery icon Estimated free delivery on Tuesday, Jul 7
  • Serta Perfect Sleeper 11-inch plush pillow-top, white-blue burst quilting, charcoal sides SERTA® Perfect Sleeper® 11" Plush Pillow Top Mattress - King brand icon
    • 825 Edition Custom Support Coil System
    • CoolFeel Fabric™
    • Gel Band Support
    • Serta® Support Foam
    • PillowSoft® Foam
    • Designed and Made in Canada
    King $892
    Compare at $1,799
    Online availability icon Out Of Stock
    In-Store availability icon On Display:
  • Serta Classic 12.5-inch medium euro-top mattress, blue-white ombre plush top, navy floral sides SERTA® Classic® 12.5" Medium Euro Top Mattress - King brand icon
    • 800 Edition Custom Support Coil System
    • 3 Zone Body Support + Serta® Support Gel Foam
    • Cool Twist® Gel Memory Foam + Serta® PillowSoft® Foam
    • Serta® Anti-Microbial Fibre Technology
    • Serta® Best Edge® Foam Encasement
    • Designed and Made in Canada
    King $922
    Compare at $2,199
    Online availability icon Backorder Available
    In-Store availability icon On Display:
    Estimated delivery icon Estimated free delivery on Tuesday, Jul 7
  • Serta Classic 12.5-inch luxury-plush euro-top mattress, deep blue-white ombre top, navy floral sides SERTA® Classic® 12.5" Luxury Plush Euro Top Mattress - King brand icon
    • 800 Edition Custom Support Coil System
    • 3 Zone Body Support
    • Cool Twist® Gel Memory Foam + Serta® PillowSoft® Gel Foam
    • Serta® Anti-Microbial Fibre Technology
    • Serta® Best Edge® Foam Encasement
    • Designed and Made in Canada
    King $922
    Compare at $2,199
    Online availability icon Backorder Available
    In-Store availability icon On Display:
    Estimated delivery icon Estimated free delivery on Tuesday, Jul 7
  • Serta Perfect Sleeper 13.5-inch firm pillow-top, light-blue burst quilting, charcoal sides OPEN BAG - SERTA® Perfect Sleeper® 13.5" Firm Pillow Top Mattress - King brand icon
    • 850 Edition Custom Support Zoned Coil System
    • CoolFeel Fabric™
    • Serta® Antimicrobial Fibre
    • Cool Twist® Gel Memory Foam
    • Serta® Support Foam
    • Designed and Made in Canada
    King In stock for fast delivery $1,039
    Compare at $2,299
    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 20
    Pickup available icon Only Pickup available to
  • Serta Perfect Sleeper 12-inch luxury-firm tight-top mattress, white blue-wave top, charcoal-navy sides SERTA® Perfect Sleeper® 12" Luxury Firm Tight Top Mattress - King brand icon
    • 850 Edition Custom Support Zoned Coil System
    • CoolFeel Fabric™
    • Serta® Antimicrobial Fibre
    • Cool Twist® Gel Memory Foam
    • Serta® Support Foam
    • Designed and Made in Canada
    King $1,042
    Compare at $2,099
    Online availability icon Out Of Stock
    In-Store availability icon On Display:
  • Serta Perfect Sleeper 13.5-inch firm pillow-top, light-blue burst quilting, charcoal sides SERTA® Perfect Sleeper® 13.5" Firm Pillow Top Mattress - King brand icon
    • 850 Edition Custom Support Zoned Coil System
    • CoolFeel Fabric™
    • Serta® Antimicrobial Fibre
    • Cool Twist® Gel Memory Foam
    • Serta® Support Foam
    • Designed and Made in Canada
    King $1,117
    Compare at $2,299
    Online availability icon Out Of Stock
    In-Store availability icon On Display:
  • Serta Perfect Sleeper 13.5-inch plush pillow-top mattress, white blue-burst top, charcoal-navy sides SERTA® Perfect Sleeper® 13.5" Plush Pillow Top Mattress - King brand icon
    • 850 Edition Custom Support Zoned Coil System
    • CoolFeel Fabric™
    • Serta® Antimicrobial Fibre
    • Cool Twist® Gel Memory Foam
    • Serta® Support Foam
    • Designed and Made in Canada
    King $1,117
    Compare at $2,299
    Online availability icon Out Of Stock
    In-Store availability icon On Display:

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