King Size Mattress Protector 78 in. x 80 in. This Queen cover completely zips around the entire mattress, protecting you from dust mites and bacteria. It also features a waterproof layer in the cover protecting your mattress from spills and stains. This cover is white in color and has a soft feel, although it will not add much to the cushioning of your mattress it acts as a safeguard protecting you from spills, dust mites, and bacteria.