Mattress protector

Not to be confused with a mattress topper; "mattress pad" may mean either a cover or a topper.
A mattress protector with elastic on top of a bed base

A mattress protector (also mattress cover, mattress pad may mean this or a mattress topper[1]) is an item of removable bedding that sits on top of, or encases, a mattress to protect it. Some mattress protectors also provide protection to the person sleeping on the mattress from allergens and irritants such as dust mites, bed bugs, mold, and dead skin (like dandruff).

  1. ^ Ullman, Michelle. "Add to the Comfort of Your Bed With the Right Kind of Mattress Topper". The Spruce.