Pocket springs

Pocket springs are individually wrapped coil systems that are stitched into mattresses below a comfort layer of foam or other material. Unlike traditional innerspring systems that are interconnected, pocket springs are entirely independent, allowing added contour and pressure point relief than older innerspring models.
The general rule of pocket coil systems is that the more coils, the more responsive the mattress is, while still providing support and motion control. This directly translates to more comfort.
This system is good at reducing partner movements.