King Size Beds and 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.” But the debut of the king size mattress by Simmons was not a stunt marketing campaign just to increase sales. With the average height of the American population increasing 70% since 1918, Simmons responded to the needs of its customers and manufactured beds where they could finally sleep comfortably.

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