A thin and comfortable mattress must give the perception of almost an absence of body weight, (the correct sensation is to perceive your body floating as if it were resting on a cloud). The body weight must be distributed evenly over the entire support surface, minimising the points of greatest contact and greatest pressure with the bed.
A Topper natural mattress must be able to minimise pressure points and ensure, in the case of body movements (physiological or non-physiological), that these occur with the utmost ease and comfort, in order to minimise any awakenings, even brief ones, that would be detrimental to the quality of sleep.