Firm Stomach Sleeper Serta® Perfect Comfort X™ Cooling Technology 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.
Stomach sleepers need a firm, supportive surface that keeps the hips from sinking and the spine flat — usually a firm to extra-firm feel. The options below help stomach sleepers avoid lower-back strain. Compare them by brand, feel, and profile.
Serta Perfect Comfort X mattresses deliver the next level of comfort and support, combining advanced memory foams, targeted multi-zone coil systems, and cooling technologies to provide a truly luxurious sleep experience.
Cooling-technology mattresses use gel-infused foams, phase-change covers, or cooling fibres that actively pull heat away from your body — ideal for hot sleepers who wake up overheated. Compare every cooling 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 Stomach Sleeper Serta® Perfect Comfort X™ Cooling Technology All Mattresses
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  • SERTA® Perfect Comfort X™ 13" Firm Tight Top Mattress SERTA® Perfect Comfort X™ 13" Firm Tight Top Mattress brand icon
    • 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 $0
    Double/Full SOLD OUT
    Queen SOLD OUT
    Compare at $2,299
    King SOLD OUT
    Online availability icon In-Stock Only 6 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 4
    Pickup available icon Only Pickup available to
  • SERTA® Perfect Comfort X™ 14.5" Luxury Firm Tight Top Mattress SERTA® Perfect Comfort X™ 14.5" Luxury Firm Tight Top Mattress brand icon
    • 2550 Series 5 ZoneActive™ Pocket Coil System
    • Perfect Conform™ Graphite Memory Foam
    • Cool Twist® Gel Memory Foam
    • Perfect Conform™ Micro Coils
    • CoolFeel Fabric™ w/ QuiltLoft™ Memory Foam
    • Designed and Made in Canada
    Twin XL $1,192
    Double/Full $1,282
    Queen SOLD OUT
    Compare at $2,799
    King SOLD OUT
    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 4
    Pickup available icon Only Pickup available to
  • SERTA® Perfect Comfort X™ 14" Luxury Firm Hybrid Mattress SERTA® Perfect Comfort X™ 14" Luxury Firm Hybrid Mattress brand icon
    • 2550 Series 5 ZoneActive™ Pocket Coil System
    • Perfect Conform™ Graphite Memory Foam
    • Deep Reaction® Max Gel Memory Foam + Cool Twist® Gel Memory Foam
    • Perfect Conform™ Micro Coils
    • CoolFeel Fabric™ w/ QuiltLoft™ Memory Foam
    • Designed and Made in Canada
    Twin XL $1,396
    Double/Full SOLD OUT
    Queen SOLD OUT
    Compare at $3,299
    King SOLD OUT
    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 4
    Pickup available icon Only Pickup available to
  • SERTA® Perfect Comfort X™ 15" Luxury Firm Super Pillow Top Mattress SERTA® Perfect Comfort X™ 15" Luxury Firm Super Pillow Top Mattress brand icon
    • 2550 Series 5 ZoneActive™ Pocket Coil System
    • Perfect Conform™ Graphite Memory Foam
    • Cool Twist® Gel Memory Foam
    • Perfect Conform™ Micro Coils
    • CoolFeel Fabric™ w/ QuiltLoft™ Memory Foam
    • Designed and Made in Canada
    Twin XL $1,396
    Double/Full $1,489
    Queen SOLD OUT
    Compare at $3,299
    King SOLD OUT
    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 4
    Pickup available icon Only Pickup available to
  • SERTA® Perfect Comfort X™ 13" Firm Tight Top Mattress - Twin XL SERTA® Perfect Comfort X™ 13" Firm Tight Top Mattress - Twin XL brand icon
    • 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 $0
    Compare at $1,999
    Online availability icon In-Stock Only 6 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 4
    Pickup available icon Only Pickup available to
  • SERTA® Perfect Comfort X™ 14.5" Luxury Firm Tight Top Mattress - Twin XL SERTA® Perfect Comfort X™ 14.5" Luxury Firm Tight Top Mattress - Twin XL brand icon
    • 2550 Series 5 ZoneActive™ Pocket Coil System
    • Perfect Conform™ Graphite Memory Foam
    • Cool Twist® Gel Memory Foam
    • Perfect Conform™ Micro Coils
    • CoolFeel Fabric™ w/ QuiltLoft™ Memory Foam
    • Designed and Made in Canada
    Twin XL $1,192
    Compare at $2,599
    Online availability icon In-Stock Only 6 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 4
    Pickup available icon Only Pickup available to
  • SERTA® Perfect Comfort X™ 14.5" Luxury Firm Tight Top Mattress - Double/Full SERTA® Perfect Comfort X™ 14.5" Luxury Firm Tight Top Mattress - Double/Full brand icon
    • 2550 Series 5 ZoneActive™ Pocket Coil System
    • Perfect Conform™ Graphite Memory Foam
    • Cool Twist® Gel Memory Foam
    • Perfect Conform™ Micro Coils
    • CoolFeel Fabric™ w/ QuiltLoft™ Memory Foam
    • Designed and Made in Canada
    Double/Full $1,282
    Compare at $2,699
    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 4
    Pickup available icon Only Pickup available to
  • SERTA® Perfect Comfort X™ 14" Luxury Firm Hybrid Mattress - Twin XL SERTA® Perfect Comfort X™ 14" Luxury Firm Hybrid Mattress - Twin XL brand icon
    • 2550 Series 5 ZoneActive™ Pocket Coil System
    • Perfect Conform™ Graphite Memory Foam
    • Deep Reaction® Max Gel Memory Foam + Cool Twist® Gel Memory Foam
    • Perfect Conform™ Micro Coils
    • CoolFeel Fabric™ w/ QuiltLoft™ Memory Foam
    • Designed and Made in Canada
    Twin XL $1,396
    Compare at $2,999
    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 4
    Pickup available icon Only Pickup available to
  • SERTA® Perfect Comfort X™ 15" Luxury Firm Super Pillow Top Mattress - Twin XL SERTA® Perfect Comfort X™ 15" Luxury Firm Super Pillow Top Mattress - Twin XL brand icon
    • 2550 Series 5 ZoneActive™ Pocket Coil System
    • Perfect Conform™ Graphite Memory Foam
    • Cool Twist® Gel Memory Foam
    • Perfect Conform™ Micro Coils
    • CoolFeel Fabric™ w/ QuiltLoft™ Memory Foam
    • Designed and Made in Canada
    Twin XL $1,396
    Compare at $2,999
    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 4
    Pickup available icon Only Pickup available to
  • SERTA® Perfect Comfort X™ 15" Luxury Firm Super Pillow Top Mattress - Double/Full SERTA® Perfect Comfort X™ 15" Luxury Firm Super Pillow Top Mattress - Double/Full brand icon
    • 2550 Series 5 ZoneActive™ Pocket Coil System
    • Perfect Conform™ Graphite Memory Foam
    • Cool Twist® Gel Memory Foam
    • Perfect Conform™ Micro Coils
    • CoolFeel Fabric™ w/ QuiltLoft™ Memory Foam
    • Designed and Made in Canada
    Double/Full $1,489
    Compare at $3,099
    Online availability icon In-Stock Only 2 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 4
    Pickup available icon Only Pickup available to
  • OPEN BAG - SERTA® Perfect Comfort X™ 14" Luxury Firm Hybrid Mattress - Double/Full OPEN BAG - SERTA® Perfect Comfort X™ 14" Luxury Firm Hybrid Mattress - Double/Full brand icon
    • 2550 Series 5 ZoneActive™ Pocket Coil System
    • Perfect Conform™ Graphite Memory Foam
    • Deep Reaction® Max Gel Memory Foam + Cool Twist® Gel Memory Foam
    • Perfect Conform™ Micro Coils
    • CoolFeel Fabric™ w/ QuiltLoft™ Memory Foam
    • Designed and Made in Canada
    Double/Full $906
    Compare at $3,099
    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 4
    Pickup available icon Only Pickup available to

11 Items

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