Do you have a spare matress that you would like to keep from dust? Or a bedwetting kid and you are tired of airing your matress on a daily basis? Or are you taking care of an adult with incontinence problem and would want to ensure they are comfortable sleeping on a clean matress? This zippered waterproof mattress protectors is the best thing for you. You only wipe with a dump cloth to eliminate urine smell in the room. This fits even a 10inches matress.