Firm King Size Mattresses

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  1. King Sealy Posturepedic Response Performance Cooper Mountain IV Cushion Firm Pillow Top Mattress
    Free Express Delivery
    King Sealy Posturepedic Response Performance Cooper Mountain IV Cushion Firm Pillow Top Mattress
    Rating:
    94%

    From $849.00

    To $3,717.00

    Reg: $1,061.00 You save $212.00!
    Comfort Scale - 4
  2. King Simmons Beautyrest Silver Lydia Manor III Luxury Firm Pillow Top Mattress
    Free Delivery
    King Simmons Beautyrest Silver Lydia Manor III Luxury Firm Pillow Top Mattress
    Rating:
    94%

    From $849.00

    To $3,917.00

    Reg: $1,059.00 You save $210.00!
    Comfort Scale - 3
  3. King Simmons Beautyrest Silver Kenosha Place III Luxury Firm Mattress
    Free Delivery
    King Simmons Beautyrest Silver Kenosha Place III Luxury Firm Mattress
    Rating:
    94%

    From $639.00

    To $3,707.00

    Reg: $799.00 You save $160.00!
    Comfort Scale - 3.5
  4. King Simmons Beautyrest Silver Lydia Manor III Extra Firm Mattress
    Free Delivery
    King Simmons Beautyrest Silver Lydia Manor III Extra Firm Mattress
    Rating:
    94%

    From $789.00

    To $3,857.00

    Reg: $983.00 You save $194.00!
    Comfort Scale - 2.5
  5. King Serta iComfort Blue Max 1000 Cushion Firm Mattress + FREE Bose Solo 5 TV Soundbar
    Money Back Guarantee!
    King Serta iComfort Blue Max 1000 Cushion Firm Mattress + FREE Bose Solo 5 TV Soundbar
    Rating:
    100%
    (2)

    From $2,299.00

    To $6,499.00

    Reg: $2,499.00 You save $200.00!
    Comfort Scale - 3
  6. King Sealy Posturepedic Response Performance Cooper Mountain IV Firm Mattress
    Free In Home Delivery
    King Sealy Posturepedic Response Performance Cooper Mountain IV Firm Mattress
    Rating:
    88%

    From $789.00

    To $1,077.00

    Reg: $989.00 You save $200.00!
    Comfort Scale - 1.5
  7. Sapphire Suite Double Sided Firm Mattress Corner
    Free In Home Delivery
    King Serta Perfect Sleeper Hotel Sapphire Suite II Firm Double Sided Mattress
    Rating:
    96%

    From $1,149.00

    To $1,507.00

    Reg: $1,349.00 You save $200.00!
    Comfort Scale - 3
  8. King Simmons Beautyrest Silver Lydia Manor III Luxury Firm Mattress
    Free Delivery
    King Simmons Beautyrest Silver Lydia Manor III Luxury Firm Mattress
    Rating:
    90%

    From $789.00

    To $3,857.00

    Reg: $983.00 You save $194.00!
    Comfort Scale - 3.5

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Firm King Size Mattresses



The King is the largest of the standard mattress sizes, providing couples with spacious comfort even when sharing the bed. Firm King size mattresses are designed for couples where both sleepers enjoy a medium-firm to hard level of comfort, or where one or both sleepers need solid support to avoid waking up with a sore back. Side sleepers generally do not do well on firm mattresses, as the dense sleeping surface is too unforgiving for the outlying hips and shoulders. But if you and/or your partner enjoys/needs a firm sleeping surface, you won't beat the spacious luxury of a King.

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