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A mattress topper on a boxspring mattress. A mattress pad, mattress topper, or underpad is designed to lie atop a mattress.Made from a variety of materials including wool, cotton, memory foam, feather and latex, [1] its function is to provide an extra layer of comfort, especially when the existing mattress is worn or uncomfortable.
The American company Serta International is a subsidiary of the American company Serta Simmons Bedding, LLC of Doraville, Georgia. [3] Other licensees include Serta Dormae in Texas, Serta Restokraft in Michigan, and Salt Lake Mattress in Utah. [4] [5] [6] In August 2018, Serta Simmons Bedding, LLC announced a merger with online retailer Tuft ...
A memory foam mattress is usually denser than other foam mattresses, making it both more supportive and heavier. Memory foam mattresses are often sold for higher prices than traditional mattresses. Memory foam used in mattresses is commonly manufactured in densities ranging from less than 24kg/m 3 (1.5 lb/ft 3 ) to 128kg/m 3 (8 lb/ft 3 ) density.
In 2012, Simmons and its sister company Serta International were acquired by American private equity company Advent International. [3] As of 2022, Simmons is a subsidiary of the American company Serta Simmons Bedding, LLC of Doraville, Georgia. [4] On January 23, 2023, Serta Simmons Bedding filed for Chapter 11 bankruptcy. [5]
Bushnell's patent has been cited [26] as an innerspring but it was an under bed spring--which in the mid-1800s was also called a mattress or base layer of a bed. Crofton's work of 1834 and Felton's work of 1796, in light of archeological finds and great works such as Sir Robert Hooke's Lecture on Springs , clearly indicate that coil springs ...
Standard mattress depth ranges from the "standard" size of 9 in (23 cm) to "high contour" of up to 13 in (33 cm). ... While the dimensions are specified to the half ...
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