HEFEL KlimaControl Comfort pillows guarantee an ideal sleeping environment. The pillows always feel pleasantly dry even when exposed to strong perspiration. This is achieved by the perfect combination of TENCEL® filling (quilted cover) and fabric. The exceptional microstructure of TENCEL® disperses more moisture and vapour from the body than any other fibre. Furthermore this process does not create a film of water on the skin in which bacteria can establish themselves.