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Do You Have to Wait 72 Hours for a Mattress to Fully Expand?

Learn how long you really need to wait for a mattress to expand and when it's ready for use. Get expert tips on mattress setup.

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Video transcript

No, you don't have to wait the full 72 hours for a mattress to expand. Most mattresses reach about 90% of their full size within a few hours. However, waiting the recommended 72 hours ensures it fully expands and any odors dissipate. It's best to wait as long as possible for optimal comfort and durability.

Questions and answers

  1. Why do mattresses take time to expand after unboxing?

    Mattresses compressed and vacuum-sealed for shipping need time to decompress to their full size. This process also allows any packing odors to dissipate.

  2. Can I sleep on a mattress before it fully expands?

    Yes, most mattresses reach about 90% of their full size within a few hours, making them comfortable enough to use before the full 72-hour expansion period.

  3. What causes the odor from a new mattress after unboxing?

    The odor, often called off-gassing, comes from volatile organic compounds in the mattress materials and usually fades within a few days of airing out.

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For more insights on mattress maintenance and choosing the right sleep surface, explore our related videos on mattress cleaning, off-gassing, and selecting the perfect mattress for your sleep needs.