It arrives compressed in a box. How do I set it up?

Unbox this mattress on your base, unroll it, and let it expand. It firms up and takes full shape over a few hours, and you can sleep on it the same night, though it may keep expanding for a day or two. Because the comfort layer is only 1 inch, give it time to fully decompress before judging the feel. Do not stand or jump on it; it is engineered for sleeping, not as a platform.

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