Uncovered mattresses facilitate the perfect conditions for the breeding of dust mites which can cause allergies, asthma, eczema and rhinitis. These dust mites, which are invisible to the naked eye, live on the millions of skin cells and body fluids that humans expel every night. This protector is also bed bug proof as well. Protect yourself as well as your mattress by covering your mattress with the Leggett and Platt QD0165 EasyZip Expandable Surround Protector. Easy Zip has an easy to unzip top for cleaning.