Pocket coil spring assembly including flexible foam

A mattress assembly, comprising:

• a spring core having a first support surface and a second support surface opposite the first support surface, the spring core including:
• a plurality of coil springs positioned in a matrix and extending in rows from a first end of the mattress assembly to a second end of the mattress assembly, each coil spring having an upper portion and a lower portion, the upper portion and the lower portion collectively defining a height of each coil spring,
• a plurality of fabric pockets, each fabric pocket encasing one of the plurality of coil springs, and each fabric pocket including a top area covering the upper portion of each coil spring and a bottom area covering the lower portion of each coil spring, and
• a plurality of amounts of a flexible foam each having a top surface and each positioned between the rows of the coil springs.