Definitions for "Coil Count"
The number of innerspring coils in a mattress. The standard for a double bed is 312, 374 for a queen and 450 for a king-size bed. Coil count doesn't necessarily guarantee a better or more effective mattress.
The specific number of coils in a mattress or box spring. The standard count is based on the coils within full size units. A high coil count does not necessarily indicate better quality. Rather, it is the design of a coil, the gauge of wire used and the way the coil is engineered that determines the comfort, support and durability that it will provide.
The number of coils in an innerspring unit. Though the count can effect weight distribution, it is not the determining factor for firmness. The count is usually based on the number of coils in a full-size unit.