US-Mattress sale event

Firm King Size Mattresses

Mattresses Sale Ends December 17th

Showing 1-36 of 263 results

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  1. King Simmons Beautyrest Platinum Phillipsburg III Extra Firm Mattress
    Free Express Delivery
    King Simmons Beautyrest Platinum Phillipsburg III Extra Firm Mattress
    Rating:
    94%

    From $1,070.00

    To $4,138.00

    Reg: $1,479.00 You save $409.00!
    Comfort Scale - 1
  2. King Simmons Beautyrest Platinum Phillipsburg III Luxury Firm Mattress
    Free Express Delivery
    King Simmons Beautyrest Platinum Phillipsburg III Luxury Firm Mattress
    Rating:
    92%

    From $1,070.00

    To $4,138.00

    Reg: $1,479.00 You save $409.00!
    Comfort Scale - 3.5
  3. King Simmons Beautyrest Black Desiree Luxury Firm Mattress + FREE $100 Gift Card
    Save $300
    King Simmons Beautyrest Black Desiree Luxury Firm Mattress + FREE $100 Gift Card
    Rating:
    100%
    (4)

    From $2,299.00

    To $5,367.00

    Reg: $2,599.00 You save $300.00!
    Comfort Scale - 3
  4. King Simmons Beautyrest Silver Hybrid Sondra III Luxury Firm Mattress
    38% Off!
    King Simmons Beautyrest Silver Hybrid Sondra III Luxury Firm Mattress
    Rating:
    86%
    (4)

    From $923.00

    To $3,991.00

    Reg: $1,499.00 You save $576.00!
    Comfort Scale - 3.5
  5. King Simmons Beautyrest Platinum Spring Grove Luxury Firm Mattress
    Free $199 Sleeptracker
    King Simmons Beautyrest Platinum Spring Grove Luxury Firm Mattress
    Rating:
    92%

    From $1,070.00

    To $4,138.00

    Reg: $1,479.00 You save $409.00!
    Comfort Scale - 3.5
  6. King Simmons Beautyrest Platinum Phillipsburg III Luxury Firm Pillow Top Mattress
    Free Express Delivery
    King Simmons Beautyrest Platinum Phillipsburg III Luxury Firm Pillow Top Mattress
    Rating:
    88%

    From $1,145.00

    To $4,213.00

    Reg: $1,529.00 You save $384.00!
    Comfort Scale - 3
  7. King Simmons Beautyrest Platinum Spring Grove Extra Firm Mattress
    Free $199 Sleeptracker
    King Simmons Beautyrest Platinum Spring Grove Extra Firm Mattress
    Rating:
    94%

    From $1,070.00

    To $4,138.00

    Reg: $1,479.00 You save $409.00!
    Comfort Scale - 1
  8. King Simmons Beautyrest Black Calista Extra Firm Mattress + FREE $100 Gift Card
    Save $300
    King Simmons Beautyrest Black Calista Extra Firm Mattress + FREE $100 Gift Card
    Rating:
    96%
    (9)

    From $1,999.00

    To $5,067.00

    Reg: $2,299.00 You save $300.00!
    Comfort Scale - 2
  9. King Sealy Posturepedic Response Premium Barrett Court IV Ultra Firm Mattress
    Free In Home Delivery
    King Sealy Posturepedic Response Premium Barrett Court IV Ultra Firm Mattress
    Rating:
    100%
    (3)

    From $1,110.00

    To $4,977.00

    Reg: $1,273.00 You save $163.00!
    Comfort Scale - 1
  10. King Sealy Posturepedic Response Premium Barrett Court IV Cushion Firm Pillow Top Mattress
    Free In Home Delivery
    King Sealy Posturepedic Response Premium Barrett Court IV Cushion Firm Pillow Top Mattress
    Rating:
    84%

    From $1,176.00

    To $5,043.00

    Reg: $1,349.00 You save $173.00!
    Comfort Scale - 3.5
  11. King Simmons Beautyrest Silver Hybrid Vivian III Luxury Firm Mattress
    38% Off!
    King Simmons Beautyrest Silver Hybrid Vivian III Luxury Firm Mattress
    Rating:
    100%
    (2)

    From $1,096.00

    To $4,164.00

    Reg: $1,779.00 You save $683.00!
    Comfort Scale - 4
  12. King Sealy Posturepedic Response Premium Warrenville IV Cushion Firm Mattress
    Free In Home Delivery
    King Sealy Posturepedic Response Premium Warrenville IV Cushion Firm Mattress
    Rating:
    76%

    From $1,026.00

    To $4,893.00

    Reg: $1,177.00 You save $151.00!
    Comfort Scale - 3
  13. King Sealy Posturepedic Response Premium Warrenville IV Cushion Firm Pillow Top Mattress
    Free In Home Delivery
    King Sealy Posturepedic Response Premium Warrenville IV Cushion Firm Pillow Top Mattress
    Rating:
    96%

    From $1,025.00

    To $4,892.00

    Reg: $1,176.00 You save $151.00!
    Comfort Scale - 4.5

Showing 1-36 of 263 results

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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.