ULTRA-THIN DESIGN: Very thin, ultra-light, stretchy, durable fabric encourages the passage of moisture and air, while delivering complete waterproof mattress protection 5-SIDED: Well-designed fitted-sheet style protector with 4-way stretch to fit mattresses that are 9 - 14 inches in depth ESSENTIAL: Why Essential? The flexible design slips easily onto mattresses for an instant improvement of your sleep environment that also doesn’t change the feel of your mattress MIRACLE MEMBRANE: Waterproof barrier (polyurethane inside lining) along with a high quality blended polyester top surface that extends the life of the mattress by blocking accidents, spills and stains. It will also protect you from allergens that may lurk in your mattress, including mold, mildew, pet dander and pollen NOISELESS & BREATHABLE: This unique design allows for a noiseless healthy sleep environment and maximum air permeability EASY TO WASH AND USE: Machine washable with laundry detergents that do not contain bleach or bleach alternatives and then simply tumble dry on low heat with bed sheets, towels or other clothing. Please do not dry clean, iron, or bleach This Protect-a-Bed Essential mattress protector keeps your bed clean and comfortable for a good night's sleep. The Miracle Membrane barrier promotes a healthy sleep environment by protecting you from allergens that may lurk in the mattress, including mold, mildew, pet dander and pollen. The ultra-light, stretchy, durable fabric encourages the passage of moisture and air, while delivering a convenient waterproof surface.