The average memory foam mattress has millions of tiny holes, and air escapes from these as the mattress foam moulds around the body. This action is activated by pressure and body heat, and results in a foam mattress that offers total independent support without pressure points.
Reflex foam, like memory foam, is also high density, but is constructed in a different way with larger bubbles. When pressure is applied to the bubbles, they act in a similar way to water in a balloon – the air does not escape, and is just displaced ‘sideways’. Once pressure is relieved, the bubbles spring back into shape and the mattress regains its shape.
It’s for this reason that the reflex foam mattress is popular as an orthopaedic mattress, as it offers a firm but comfortable mattress option.