Preserving your mattress with a Sleep Titeª mattress protector is imperative. Sleep Tite mattress protectors prevent the accumulation of moisture and skin flakes in your mattress; an unprotected mattress creates an optimal environment for the breeding of bacteria, dust mites, and bed bugs. The protective material is 100% waterproof and will shield your mattress from all liquid stains. If a stain were to reach the mattress, most mattress manufacturer's warranties are void. Every night your body sheds millions of skin flakes and loses up to 1 liter of body fluid through your skin pores and mouth. Up to 2 million dust mites can live in your unprotected mattress. Dust mites survive on dead skin cells and bodily fluids that are abundant in your bed. Allergic reactions are caused by the waste and skin these dust mites leave behind. Exposure to dust mites has been proven to lead to the development of asthma in young children. Allergens produced by dust mites are the most common trigger for asthmatics. Dust mites have been shown to be a leading cause of eczema. Sleep Titeª mattress protectors cut off the food supply to dust mites, making it impossible for them to survive. The innovative Sleep Titeª material is 100% waterproof and breathable. The 100% cotton terry surface absorbs up to one liter of liquid. The microscopic pores of the polyurethane membrane allow air passage, but block liquids. The unique design allows body heat to pass through to the mattress, maintaining a comfortable sleeping temperature. The ultra-thin fabric dynamically conforms to the natural shape of the mattress. Waterproof, breathable, noiseless mattress protection that won't change the feel of your bed.