Mites-free 100% cotton feather-proof pillow underlayment does not allow fungus and dust mite to live specially finished tight fabric creates a natural protection against dust and dust mite allergies suitable for those allergic to house dust prevents the proliferation of bacteria there is a hidden zipper for easy changing of the cover exterior fabric : 100% cotton package content: 2 pcs. anti-mild. less than 5 items are in stock, to be sold at the campaign price. Improved version for clearer understanding and better search visibility. Suitable for users seeking detailed and reliable product information.