Just like our zippered AllergyCare™ Cotton mattress covers, these fitted mattress covers are made for cotton-lovers. The ultimate in comfort without sacrificing effectiveness. 100% cotton mattress covers are perfect for hot sleepers and for anyone who owns a memory foam mattress. Being a fitted cover they are as easy to put on as a fitted sheet. AllergyCare™ fitted cotton dust mite covers are woven entirely of chemical free, naturally soft cotton fibers. With a mean flow pore size diameter of 4.6 microns, AllergyCare™ cotton allergy control fabric is one of the most effective, cool and comfortable dust mite allergen barriers covers available today.