Firm Serta iComfort® PRO Mattresses | Advanced Cooling and Responsive Latex 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.
Serta iComfort® PRO is a premium mattress line featuring advanced cooling and responsive latex foam. Enjoy targeted support and pressure-relieving comfort for a cooler, more restorative sleep.

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 Serta iComfort® PRO Mattresses | Advanced Cooling and Responsive Latex All Mattresses
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  • SERTA® iComfort® PRO 12.5" Firm Latex Mattress SERTA® iComfort® PRO 12.5" Firm Latex Mattress brand icon
    • CoolFeel™ Pro System
    • 5 ZoneResponse™ Design
    • Graphite-Infused True Response™ Latex Foam
    • True Response™ Latex Foam
    • Derived from 100% Natural Latex
    • 100% Canada Assembled
    Twin XL $1,879
    Queen SOLD OUT
    Compare at $4,799
    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 5
    Pickup available icon Only Pickup available to
  • SERTA® iComfort® PRO 14.5" Firm Euro Top Latex Mattress SERTA® iComfort® PRO 14.5" Firm Euro Top Latex Mattress 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
    Twin XL $2,799
    Queen $3,499
    Compare at $5,299
    King SOLD OUT
    Online availability icon In-Stock Only 9 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 5
    Pickup available icon Only Pickup available to
  • SERTA® iComfort® PRO 12.5" Firm Latex Mattress SERTA® iComfort® PRO 12.5" Firm Latex Mattress 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
    Twin XL $5,399
    Queen $5,999
    Compare at $8,899
    King $6,999
    Online availability icon In-Stock
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 5
    Pickup available icon Only Pickup available to
  • 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
    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 5
    Pickup available icon Only Pickup available to
  • SERTA® iComfort® PRO 12.5" Firm Latex Mattress - Twin XL SERTA® iComfort® PRO 12.5" Firm Latex Mattress - Twin XL brand icon
    • CoolFeel™ Pro System
    • 5 ZoneResponse™ Design
    • Graphite-Infused True Response™ Latex Foam
    • True Response™ Latex Foam
    • Derived from 100% Natural Latex
    • 100% Canada Assembled
    Twin XL $1,879
    Compare at $3,299
    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 5
    Pickup available icon Only Pickup available to
  • SERTA® iComfort® PRO 14.5" Firm Euro Top Latex Mattress - Twin XL SERTA® iComfort® PRO 14.5" Firm Euro Top Latex Mattress - Twin XL 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
    Twin XL $2,799
    Compare at $4,199
    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 5
    Pickup available icon Only Pickup available to
  • SERTA® iComfort® PRO 14.5" Firm Euro Top Latex Mattress - Queen SERTA® iComfort® PRO 14.5" Firm Euro Top Latex Mattress - Queen 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
    Queen $3,499
    Compare at $5,299
    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 5
    Pickup available icon Only Pickup available to
  • SERTA® iComfort® PRO 12.5" Firm Latex Mattress - Twin XL SERTA® iComfort® PRO 12.5" Firm Latex Mattress - Twin XL 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
    Twin XL $5,399
    Compare at $7,999
    Online availability icon In-Stock Only 8 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 5
    Pickup available icon Only Pickup available to
  • SERTA® iComfort® PRO 12.5" Firm Latex Mattress - Queen SERTA® iComfort® PRO 12.5" Firm Latex Mattress - Queen 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
    Queen $5,999
    Compare at $8,899
    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 5
    Pickup available icon Only Pickup available to
  • 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!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 5
    Pickup available icon Only Pickup available to

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