Pocket springs are small soft springs, each contained in its own individual protective fabric casing. Each spring is able to work independently of one another although they are closely packed together. This individual spring action works to reduce the transmission of movement from one sleeping partner to another thereby minimising the ?roll-together? effect. The greater the number of springs, the better the support. The Spring Count is always based on the Standard King Size Mattress (150cm x 200cm ? 5? x 6?6?).