Firm King All Mattresses

Sort & Filter

Filter By
Clear All
  • Remove filter Currently Refined by Mattress Size: King
  • Remove filter Currently Refined by Comfort Level: Firm
Store Availability
My Location:
  • View Less
  • View Less
Clear
Clear
  • View Less
Clear
  • View More
  • View Less
Clear
  • View More
  • View Less
Clear
  • View Less
Clear
  • View Less
Clear
  • View More
  • View Less
Clear
  • View Less
Clear
  • View Less
Clear
  • View Less
Clear
  • View Less
Clear
  • View Less
Clear
  • View More
  • View Less
      • View Less
    • View Less
  • View Less

Shop Mattresses by Comfort Level

1 - 24 of 103 Results
Reward Card
SKU#: 62057989

Suggested Retail $2,799.00

$2,499.00 On Sale

Save 10%

Product Features
  • COOLING FOAM: SealyCool™ Gel Foam promotes a cooling environment and helps cushion, delivering comfort and support with a firm feel.
  • HYBRID COMFORT: Densely packed fabric-encased coils and premium memory foam provide pressure-relieving comfort and reduced motion transfer from your partner for a better nights rest.
  • DURAFLEX™ PRO COIL EDGE SYSTEM: Densely packed coils surround the edge of this mattress for added durability, more sleeping area, a solid seating surface, and better flexibility when paired with an adjustable base.
  • PROTECTIVE COOLING COVER: This cool-to-the-touch version of our stretch-knit cover features cooling fibers for comfort and Surface-Guard Technology™, which protects the mattress surface from odors and stains caused by bacteria and common allergens.
  • QUALITY YOU CAN TRUST: At Sealy®, our product testing exceeds industry standards to ensure you get the quality and durability you deserve, with comfort you can count on year after year.
  • Due to lighting and monitor differences, actual colors and finishes may vary slightly from what appears online.
SKU#: 60174596

Suggested Retail $3,290.00

$1,549.99 On Sale

Save 52%

Product Features
  • Adjustable Base Compatible
  • Due to lighting and monitor differences, actual colors and finishes may vary slightly from what appears online.
SKU#: 57515835

Suggested Retail $4,530.00

$2,299.00 On Sale

Save 49%

SKU#: 62163803

Suggested Retail $1,800.00

$829.99 Mart Price

Save 53%

Product Features
  • 100% Assembled in the USA
  • Due to lighting and monitor differences, actual colors and finishes may vary slightly from what appears online
SKU#: 61806550

Suggested Retail $1,660.00

$769.99 Mart Price

Save 53%

Product Features
  • Designed and Assembled in the USA
  • Certipur-US - foams that you can feel good about
  • Firm Comfort Level
  • Due to lighting and monitor differences, actual colors and finishes may vary slightly from what appears online.
SKU#: 59995472

Suggested Retail $1,200.00

$669.99 Mart Price

Save 44%

Product Features
  • Cooling Cover
  • Wrapped Coils
  • Foam Encased
  • Comfort Lock
  • Adjustable Base Friendly
  • Due to lighting and monitor differences, actual colors and finishes may vary slightly from what appears online.
SKU#: 61812913

Suggested Retail $3,850.00

$1,799.99 On Sale

Save 53%

Product Features
  • Adjustable Base Compatible
  • Due to lighting and monitor differences, actual colors and finishes may vary slightly from what appears online.
SKU#: 60012259

Suggested Retail $3,300.00

$1,699.99 Mart Price

Save 48%

Product Features
  • ThermoBalance Cover
  • Copper Ion
  • Comfort Lock
  • PowerEdge® Elite+
  • Adjustable Base Friendly
  • Due to lighting and monitor differences, actual colors and finishes may vary slightly from what appears online.
SKU#: 59469551

Suggested Retail $3,130.00

$1,429.99 Mart Price

Save 54%

Product Features
  • 14" Profile
  • Surface-Guard Technology™ MoistureProtect™
  • SealyCool™ Air Gel Foam
  • Targeted Support
  • SealyCool™ Gel Foam
  • Response Pro ™ Encased Coil
  • DuraFlex™ Coil Edge
  • SealySupport™ Gel Foam
  • 4 Vertical Handles
  • Adjustable Base Friendly
  • Due to lighting and monitor differences, actual colors and finishes may vary slightly from what appears online.
SKU#: 61788543

Suggested Retail $2,850.00

$1,329.99 On Sale

Save 53%

Product Features
  • Dual-Stage Support, Only from Beautyrest
  • Beautyrests new Targeted Support System is designed to offer additional support where your body needs it most. The T1 Pocketed Coil is placed within the center of the mattress to power the new support system. This patented, dual-stage coil design was invented by Beautyrest and provides additional support under heavier compression.
  • Sustainable Comfort
  • Beautyrest Harmony features Seaqual fabric technology. Seaqual recovers plastics from the worlds oceans and transforms them into beautiful, high quality sustainable fabrics that feel great and help promote cleaner oceans.
  • Features eco-friendly TENCEL yarn for exceptional breathability and moisture management above an antimicrobial performance layer to help keep your mattress fresh and cool for a great night's sleep.
  • NaturalCools eco-friendly TENCEL yarns and antimicrobial performance layer are paired with cool-to-the-touch technology for a cooler sleep surface and a great nights sleep.
  • Beautyrest Gel Memory Foam contours to your body to help alleviate aches and pains caused by pressure.
  • Get cool, comfortable sleep with AirCool® Foam which has a channeled design that allows airflow through the mattress.
  • A soft gel foam that helps provide comfort, support, airflow and breathability.
  • A soft, quality foam located at the surface, with an open cell structure that helps provide airflow, performance and durability for the life of the mattress.
  • Premium plant-based memory foam infused with charcoal provides natural cooling.
  • A high density, gel-infused foam that contours to your body for personalized support and cooling comfort.
  • Adjustable Base Friendly
  • Due to lighting and monitor differences, actual colors and finishes may vary slightly from what appears online.
SKU#: 62242557

Suggested Retail $2,360.00

$1,079.99 Mart Price

Save 54%

Product Features
  • 100% Assembled in the USA
  • Due to lighting and monitor differences, actual colors and finishes may vary slightly from what appears online
SKU#: 60168945

Suggested Retail $2,290.00

$1,079.99 On Sale

Save 52%

Product Features
  • Dual-Stage Support, Only from Beautyrest
  • Beautyrests new Targeted Support System is designed to offer additional support where your body needs it most. The T1 Pocketed Coil is placed within the center of the mattress to power the new support system. This patented, dual-stage coil design was invented by Beautyrest and provides additional support under heavier compression.
  • Sustainable Comfort
  • Beautyrest Harmony features Seaqual fabric technology. Seaqual recovers plastics from the worlds oceans and transforms them into beautiful, high quality sustainable fabrics that feel great and help promote cleaner oceans.
  • Features eco-friendly TENCEL yarn for exceptional breathability and moisture management above an antimicrobial performance layer to help keep your mattress fresh and cool for a great night's sleep.
  • NaturalCools eco-friendly TENCEL yarns and antimicrobial performance layer are paired with cool-to-the-touch technology for a cooler sleep surface and a great nights sleep.
  • Beautyrest Gel Memory Foam contours to your body to help alleviate aches and pains caused by pressure.
  • Get cool, comfortable sleep with AirCool® Foam which has a channeled design that allows airflow through the mattress.
  • A soft gel foam that helps provide comfort, support, airflow and breathability.
  • A soft, quality foam located at the surface, with an open cell structure that helps provide airflow, performance and durability for the life of the mattress.
  • Premium plant-based memory foam infused with charcoal provides natural cooling.
  • A high density, gel-infused foam that contours to your body for personalized support and cooling comfort.
  • Adjustable Base Friendly
  • Due to lighting and monitor differences, actual colors and finishes may vary slightly from what appears online.
SKU#: 61978888

Suggested Retail $1,400.00

$809.99 Mart Price

Save 42%

Product Features
  • Due to lighting and monitor differences, actual colors and finishes may vary slightly from what appears online.
SKU#: 61978706

Suggested Retail $1,400.00

$809.99 Mart Price

Save 42%

Product Features
  • Due to lighting and monitor differences, actual colors and finishes may vary slightly from what appears online.
Reward Card
SKU#: 62056924

Suggested Retail $2,499.00

$2,299.00 On Sale

Save $200.00

Product Features
  • COOLING FOAM: SealyCool™ Gel Foam promotes a cooling environment and helps cushion, delivering comfort and support with a firm feel.
  • TARGETED SUPPORT: Found in Sealy® hybrids, a densely packed coil system reinforces the center-third of the mattress, delivering trusted, targeted support where you need it mostyour back and core.
  • DURAFLEX™ PRO COIL EDGE SYSTEM: Densely packed coils surround the edge of this mattress for added durability, more sleeping area, a solid seating surface, and better flexibility when paired with an adjustable base.
  • PROTECTIVE COOLING COVER: This cool-to-the-touch version of our stretch-knit cover features cooling fibers for comfort and Surface-Guard Technology™, which protects the mattress surface from odors and stains caused by bacteria and common allergens.
  • QUALITY YOU CAN TRUST: At Sealy®, our product testing exceeds industry standards to ensure you get the quality and durability you deserve, with comfort you can count on year after year.
  • Due to lighting and monitor differences, actual colors and finishes may vary slightly from what appears online.
SKU#: 62293360

Suggested Retail $4,580.00

$2,209.99 Mart Price

Save 51%

Product Features
  • ThermoBalance Cover
  • Copper Ion
  • EvoWC5 Coil System
  • Ultra Premium Comfort
  • Adjustable Base Friendly
  • Made in the USA
  • Due to lighting and monitor differences, actual colors and finishes may vary slightly from what appears online.
SKU#: 61812905

Suggested Retail $3,850.00

$1,799.99 On Sale

Save 53%

Product Features
  • Adjustable Base Compatible
  • Due to lighting and monitor differences, actual colors and finishes may vary slightly from what appears online.
SKU#: 59780890

Suggested Retail $3,790.00

$1,729.99 Mart Price

Save 54%

Product Features
  • 14" Profile
  • Surface-Guard Technology™ MoistureProtect™
  • SealyCool™ Air Gel Foam
  • Targeted Support
  • SealyCool™ Gel Foam
  • Response Pro ™ Encased Coil
  • DuraFlex™ Coil Edge
  • SealySupport™ Gel Foam
  • 4 Vertical Handles
  • Due to lighting and monitor differences, actual colors and finishes may vary slightly from what appears online.
SKU#: 61351144

Suggested Retail $4,170.00

$2,099.00 On Sale

Save 49%

Product Features
  • Contoured Sleep Surface for All-Night Comfort - Our proprietary ContourFit® Design Construction features a responsive sleep surface for up to 30% more consistent comfort throughout the night.
  • Extra Support Uniquely Beautyrest - Get up to 18% more support where you need it most with the patented dual-strand design of the Precision Support System™, only from Beautyrest.
  • Adjustable Base Compatible
  • Due to lighting and monitor differences, actual colors and finishes may vary slightly from what appears online.
SKU#: 60011053

Suggested Retail $1,580.00

$1,299.99 Mart Price

Save 17%

Product Features
  • ThermoBalance Cover
  • Copper Ion
  • Comfort Lock
  • PowerEdge® Elite+
  • Adjustable Base Friendly
  • Due to lighting and monitor differences, actual colors and finishes may vary slightly from what appears online.
SKU#: 61543468

Suggested Retail $2,700.00

$1,209.99 On Sale

Save 55%

Product Features
  • Designed and Assembled in the USA
  • CertiPUR-US® Certified
  • Firm Comfort Level
  • Due to lighting and monitor differences, actual colors and finishes may vary slightly from what appears online.
SKU#: 62073200

Suggested Retail $2,000.00

$1,109.99 Mart Price

Save 44%

Product Features
  • Due to lighting and monitor differences, actual colors and finishes may vary slightly from what appears online.
SKU#: 61780045

Suggested Retail $1,940.00

$1,099.99 Mart Price

Save 43%

Product Features
  • Due to lighting and monitor differences, actual colors and finishes may vary slightly from what appears online.
SKU#: 62242565

Suggested Retail $2,360.00

$1,079.99 Mart Price

Save 54%

Product Features
  • 100% Assembled in the USA
  • Due to lighting and monitor differences, actual colors and finishes may vary slightly from what appears online
Clear All