I was excited to get this pillowcase because my son has asthma. This pillowcase is excellent quality. It is well constructed even through a wash/dry cycle. It has a soft feel and is not 'noisy'. I think it would substantially reduce with yellow staining that sometimes happens with pillow cases.I am happy though to know that my pillows are protected against allergens and bugs!  This pillow case blocks household allergens like dust mites, pollen and pet dander from collecting in your pillow. My son can sleep comfortably knowing his pillow is protected from allergens that can trigger asthma and allergy symptoms.