Memory mattresses cause the sensation of greater heat due to their peculiar quality of wrapping the body to uniformly distribute its various pressures. Precisely this wrapping effect, which depends on a greater adherence of the mattress to the body, provokes the sensation of heat, above all among those with a greater sensitivity to higher temperatures. The perception of heat is therefore subjective. For those who suffer in particular a new cover system has been studied based on the Fresh model: its three-dimensional structure, with padded zones, and particular thread type, accentuates the sensation of freshness in areas of contact. Fresh model fabric is used in some of our mattresses in evolved and memory foams.