Does it come in a box and need a box spring?

Yes, it ships rolled and compressed in a box, which owners find easy to carry home and set up. No box spring is needed; the 11-inch hybrid is self-supporting and works on a platform bed, a slatted frame with gaps under about 3 inches, a solid foundation, or an adjustable base, since it is rated adjustable-compatible. After unboxing, give it about a day to expand fully before sleeping on it.

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