Can I use it on an adjustable base or do I need a box spring?

It is rated adjustable-base compatible, and the 884 individually pocketed coils let it flex at the head and foot. 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, or a solid foundation. On an adjustable base, the flippable design still lets you rotate the mattress to even out wear over time.

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