Made from SKAL, Global Organic Textile Standard (GOTS) and Oeko-Tex certified fabric, our AllergyCare organic cotton dust mite barrier fabric is the most natural product available for dust-mite protection. Green, Non-Toxic and Eco-Friendly bedding.AllergCareorganic cotton mattress coverscan be used over any mattress, new or not so new. For older serviceable hand me down mattresses a dust mite cover is especially called for.Organic means you and your family are not being exposed to any harsh chemicals or toxins. No Chemicals, dyes or any added treatments whatsoever have been used on the covers. Just organic cotton! Perfect bed care cover for people who suffer from MCS, have sensitive skin and babies.100% GOTS Certified:This mattress cover is made from organic cotton. No added chemicals or treatments.