It is an excellent solution for people suffering from house dust mites and allergic asthma. Breathable and Liquid Proof PU Membrane with sanitized silver protection does not give any chance to bacteria and dust mites. It prevents sweating thanks to its moisture and vapor permeability. Natural cotton threads provide you with the ideal environment for a comfortable and healthy sleep. It has the Oeko-Tex 100 Standard Class 1 Certificate, which was developed to meet the need for healthy textile products free of substances harmful to human health and is considered an authority in the textile industry. It has successfully passed 100% Anti-Mite - Dust Mite proof tests in Clariant - Sanitized - Hohenstain Test Reports.