Five Sided™ Mattress Protector by Malouf

key Protector benefits Formerly Sleep Tite Five 5ided™ Smooth Protects top and sides of mattress Liquid-proof yet breathable Stops allergens and dust mites Five-sided mattress protection helps prevent the development of asthma Partner product with the American Lung Association’s LUNG FORCE campaign Laboratory-certified H2Pro® liquid-proof membrane is quiet and breathable Universal fit elastic ensures a secure fit for mattress depths 6”-22” The Five Sided™ mattress protector helps prevent the development of asthma and features the laboratory-certified H2Pro® liquid-proof membrane on five sides of the mattress. With microscopic pores to allow air passage, the H2Pro® layer completely blocks liquids, viruses, dust mites and allergens. Unlike other bed protectors that sound like a plastic bag and don't cover the whole mattress, the Five Sided™ protector is quiet and includes the universal fit elastic ensuring a secure fit for mattress depths 6”-22”.