Can the Sealy Essentials go on an adjustable base?

Yes, it is rated for adjustable bases. The pocketed-coil core and thin 1.25-inch comfort layer bend at the head and foot without a rigid edge resisting the frame, so raising your head or legs works smoothly. It also sits well on a platform bed, a slatted base with gaps under 3 inches, or a solid foundation. The 720 coils just need firm, even support underneath to perform.