Unlike other types of foam, memory foam has no spring effect. Under load, it reacts sluggishly and has a damping effect. As with the viscosity of a liquid, it becomes softer with increasing temperature. Due to this property, it is used in mattresses to relieve pressure. The foam adapts to the shape of your body, stress peaks are reduced. Especially with firm mattresses, this effect rounds off the sleeping system and ensures comfort. We recommend a topper height of 4cm, as too high visco-heads can cause a recumbent chill effect. The foam parameters density and compression hardness are not decisive here. For our standard viscose foam we use a quality RG 45Kg/m³ with a compression hardness of 15 eingesetzt