How long does it take for a Stearns and Foster mattress to expand?

Asked a month ago
When purchasing a Stearns and Foster mattress, it is common for it to require some time to fully expand after being unboxed. Typically, the mattress may take anywhere from a few hours to 48 hours to reach its intended shape and comfort level. During this period, the mattress will inflate and settle, allowing its materials, such as memory foam or latex, to regain their original structure and provide optimal support. It is important to allow sufficient time for the mattress to expand fully before using it to ensure the best sleeping experience. Customers are advised to refer to the specific guidelines provided with their mattress for any unique recommendations or instructions regarding expansion. For any further information, it may be helpful to visit stearnsandfoster.com, where additional guidance may be available.
Adam Goldkamp is the editor / author responsible for this content.
Answered Oct 23, 2025

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