OOur GRAND mattress is an excellent pillow-top/firm model. Designed around a 14.5-gauge coil lura-flex spring set that offers twice as many individually wrapped coils compared to our GOOD, BETTER, and BEST models. Beginning with molded spring protection on both sides of the coils, a cotton pad, and a layer of bonded cotton follow. The needle-punched cotton pad lies under a .5-inch layer of comfort foam, which is topped with a .375-inch layer of heavy density foam. Next the pillow-top is created from a layer of quilted cotton and a 1-inch layer of comfort foam topped with a .75-inch layer of heavy density super soft comfort foam. Finally the fine damask cover is quilted to create an excellent pillow-top/firm mattress.