We carefully choose the materials that make up our products. In the case of the siliconized polyester down that fills the Voinicel pillows, the selection was made in time between 4 domestic producers. We think we have found the best one. Some features that make the difference: Very good degree of elasticity; Very long duration of use; It ensures a special air permeability; The filling does not make any noise during sleep; Ensures the effect of micro massage through movement; Wash in washing machines; Helps reduce snoring; Washable at a temperature of 60 °C. The filling is made of pure...