mattresses_king_extra-firm

The extra firm king mattress, measuring 76" wide by 80" long, is large enough for a couple to sleep comfortably, even with a small child or pet. Extra firm mattresses are best for support, as the added stiffness allows for proper spine alignment. With most of the pressure on the bones, muscles are freed, allowing arteries and veins to relax and improving circulation. For stomach and back sleepers, extra firm mattresses can't be beat.

Read More
Shipping Icon Delivery & Shipping Showing products that can be delivered to:
  • Beautyrest

    $402.74 - $559.68 $715.99 - $994.99 Up to 44% off
    Special Financing for up to 12 Months* Details.
    EXTRA FIRM EXTRA FIRM
    Close
    Beautyrest
    Silver BRS900 11.75" Extra Firm Mattress
    Suitable for Adjustable Base Suitable for Adjustable Base

    Suitable for Adjustable Base

    This mattress can be paired with an adjustable base, which allows you to raise your head, raise your feet, or both. The latest in sleep technology, an adjustable base makes binge-watching, reading and lounging easier—and comfier.

    Motion Separation Motion Separation

    Motion Separation

    The technology in this mattress absorbs tossing and turning to keep your partner’s sleep uninterrupted throughout the night.

    Cooling Technology Cooling Technology

    Cooling Technology

    Better sleep is cool. This technology uses cooling materials and treatments that help this mattress regulate temperature and dissipate heat.

    Breathable Breathable

    Breathable

    Imagine your mattress taking a deep breath with you as soon as you lie on it. The ventilated materials help to ensure consistent airflow through this mattress during the night.

    Eco Friendly Eco Friendly

    Eco Friendly

    Elements in this mattress are sourced from nature—such as latex, cotton or wool—and are free of toxic chemicals.

    Support Support

    Support

    Your mattress’ ability to stabilize and distribute weight to help maintain natural spinal alignment.

    View more details
    Features Arrow Down
  • Beautyrest

    $506.39 - $670.79 $843.99 - $1,117.99 Up to 40% off
    Special Financing for up to 12 Months* Details.
    EXTRA FIRM EXTRA FIRM
    Close
    Beautyrest
    Silver BRS900-C 13.75" Extra Firm Mattress
    Suitable for Adjustable Base Suitable for Adjustable Base

    Suitable for Adjustable Base

    This mattress can be paired with an adjustable base, which allows you to raise your head, raise your feet, or both. The latest in sleep technology, an adjustable base makes binge-watching, reading and lounging easier—and comfier.

    Motion Separation Motion Separation

    Motion Separation

    The technology in this mattress absorbs tossing and turning to keep your partner’s sleep uninterrupted throughout the night.

    Cooling Technology Cooling Technology

    Cooling Technology

    Better sleep is cool. This technology uses cooling materials and treatments that help this mattress regulate temperature and dissipate heat.

    Breathable Breathable

    Breathable

    Imagine your mattress taking a deep breath with you as soon as you lie on it. The ventilated materials help to ensure consistent airflow through this mattress during the night.

    Eco Friendly Eco Friendly

    Eco Friendly

    Elements in this mattress are sourced from nature—such as latex, cotton or wool—and are free of toxic chemicals.

    Support Support

    Support

    Your mattress’ ability to stabilize and distribute weight to help maintain natural spinal alignment.

    View more details
    Features Arrow Down
  • Beautyrest

    FREE GIFT3

    $1,449.99 - $1,799.99 $1,499.99 - $2,099.99 Up to 17% off
    Special Financing for up to 36 Months* Details.
    EXTRA FIRM EXTRA FIRM
    Close
    Beautyrest
    PressureSmart Lux 13.5" Extra Firm Mattress
    Suitable for Adjustable Base Suitable for Adjustable Base

    Suitable for Adjustable Base

    This mattress can be paired with an adjustable base, which allows you to raise your head, raise your feet, or both. The latest in sleep technology, an adjustable base makes binge-watching, reading and lounging easier—and comfier.

    Motion Separation Motion Separation

    Motion Separation

    The technology in this mattress absorbs tossing and turning to keep your partner’s sleep uninterrupted throughout the night.

    Cooling Technology Cooling Technology

    Cooling Technology

    Better sleep is cool. This technology uses cooling materials and treatments that help this mattress regulate temperature and dissipate heat.

    Eco Friendly Eco Friendly

    Eco Friendly

    Elements in this mattress are sourced from nature—such as latex, cotton or wool—and are free of toxic chemicals.

    Support Support

    Support

    Your mattress’ ability to stabilize and distribute weight to help maintain natural spinal alignment.

    Pressure Relief Pressure Relief

    Pressure Relief

    Your mattress’ ability to cradle, cushion and relieve pressure points.

    View more details
    Features Arrow Down
  • Stearns and Foster

    INSTANT GIFT4

    $1,699.00 - $2,399.00
    Special Financing for up to 60 Months* Details.
    EXTRA FIRM EXTRA FIRM
    Close
    Stearns and Foster
    Estate Rockwell 13.5" Luxury Ultra Firm Mattress
    Suitable for Adjustable Base Suitable for Adjustable Base

    Suitable for Adjustable Base

    This mattress can be paired with an adjustable base, which allows you to raise your head, raise your feet, or both. The latest in sleep technology, an adjustable base makes binge-watching, reading and lounging easier—and comfier.

    Cooling Technology Cooling Technology

    Cooling Technology

    Better sleep is cool. This technology uses cooling materials and treatments that help this mattress regulate temperature and dissipate heat.

    Breathable Breathable

    Breathable

    Imagine your mattress taking a deep breath with you as soon as you lie on it. The ventilated materials help to ensure consistent airflow through this mattress during the night.

    Craftsmanship Craftsmanship

    Craftsmanship

    Hours of hands-on, meticulously detailed artistry for a best-in-class mattress.

    Support Support

    Support

    Your mattress’ ability to stabilize and distribute weight to help maintain natural spinal alignment.

    Pressure Relief Pressure Relief

    Pressure Relief

    Your mattress’ ability to cradle, cushion and relieve pressure points.

    View more details
    Features Arrow Down
  • Nature's Rest

    FREE GIFT3

    $2,749.99 - $3,299.99 $2,799.99 - $3,799.99 Up to 15% off
    Special Financing for up to 60 Months* Details.
    EXTRA FIRM EXTRA FIRM
    Close
    Nature's Rest
    Glacier 11" Extra Firm
    Suitable for Adjustable Base Suitable for Adjustable Base

    Suitable for Adjustable Base

    This mattress can be paired with an adjustable base, which allows you to raise your head, raise your feet, or both. The latest in sleep technology, an adjustable base makes binge-watching, reading and lounging easier—and comfier.

    Motion Separation Motion Separation

    Motion Separation

    The technology in this mattress absorbs tossing and turning to keep your partner’s sleep uninterrupted throughout the night.

    Breathable Breathable

    Breathable

    Imagine your mattress taking a deep breath with you as soon as you lie on it. The ventilated materials help to ensure consistent airflow through this mattress during the night.

    Eco Friendly Eco Friendly

    Eco Friendly

    Elements in this mattress are sourced from nature—such as latex, cotton or wool—and are free of toxic chemicals.

    Organic Organic

    Organic

    Organic mattresses are constructed with textiles and materials created without the use or presence of harmful chemicals.

    Hypoallergenic Hypoallergenic

    Hypoallergenic

    Materials in this mattress can reduce allergens that can trouble those with common allergies.

    Craftsmanship Craftsmanship

    Craftsmanship

    Hours of hands-on, meticulously detailed artistry for a best-in-class mattress.

    Support Support

    Support

    Your mattress’ ability to stabilize and distribute weight to help maintain natural spinal alignment.

    View more details
    Features Arrow Down
  • Beautyrest

    FREE GIFT3

    $1,850.00 $3,699.99 50% off
    Special Financing for up to 36 Months* Details.
    EXTRA FIRM EXTRA FIRM
    Close
    Beautyrest
    Legend Garrison 14.7" Extra Firm Mattress
    Suitable for Adjustable Base Suitable for Adjustable Base

    Suitable for Adjustable Base

    This mattress can be paired with an adjustable base, which allows you to raise your head, raise your feet, or both. The latest in sleep technology, an adjustable base makes binge-watching, reading and lounging easier—and comfier.

    Motion Separation Motion Separation

    Motion Separation

    The technology in this mattress absorbs tossing and turning to keep your partner’s sleep uninterrupted throughout the night.

    Cooling Technology Cooling Technology

    Cooling Technology

    Better sleep is cool. This technology uses cooling materials and treatments that help this mattress regulate temperature and dissipate heat.

    Breathable Breathable

    Breathable

    Imagine your mattress taking a deep breath with you as soon as you lie on it. The ventilated materials help to ensure consistent airflow through this mattress during the night.

    Support Support

    Support

    Your mattress’ ability to stabilize and distribute weight to help maintain natural spinal alignment.

    Pressure Relief Pressure Relief

    Pressure Relief

    Your mattress’ ability to cradle, cushion and relieve pressure points.

    View more details
    Features Arrow Down
  • Mattress Matcher

    Find the Perfect Mattress

    Our personalized shopping experience will take the guess work out of buying your perfect mattress.