King-Size Mattresses

Introduced in 1958 by Simmons, the king size mattress is 80" long and 76" wide. The king sized mattress was designed to provide more sleeping space and fit two standard twin bed box frames for easier home installation. The king size mattress shook up the industry so much that Life magazine featured Simmons in 1963, with the headline "Simmons Launches Biggest King-size Beautyrest Campaign; Bigger Beds–Bigger Profit."

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  • $4,549.00 - $5,699.00
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  • $2,899.00 - $4,099.00 $2,399.00 - $3,599.00
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  • $3,249.00 - $4,399.00
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  • $2,399.00 - $3,599.00 $1,899.00 - $3,099.00
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  • $3,449.00 - $4,599.00
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  • $4,449.00 - $5,599.00
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  • $3,949.00 - $5,099.00
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  • $3,449.00 - $4,599.00
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  • $2,549.00 - $3,699.00
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  • $2,849.00 - $3,999.00
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  • $2,099.00 - $2,799.00
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  • $499.00 - $699.00
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  • $329.00 - $539.00
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    WEB BUSTER 30% OFF

  • $239.00 - $389.00
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  • $299.00 - $599.00
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  • $49.00 - $69.00
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  • $409.00 - $709.00
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    WEB BUSTER 30% OFF

  • $299.00 - $549.00
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    FREE SHIPPING

  • $409.00 - $709.00
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    WEB BUSTER 30% OFF

  • $359.00 - $609.00
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    WEB BUSTER 30% OFF

  • $229.00 - $479.00
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    FREE SHIPPING

  • $259.00 - $439.00
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    WEB BUSTER 30% OFF

  • $359.00 - $609.00
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    WEB BUSTER 30% OFF