The Bed Lock Deluxe mattress protector is a durable, thin and moisture proof mattress protector. Offering the latest innovations and proven technologies, this mattress protector will create a barrier to stop moisture and allergens. Unlike other protectors, Bed Lock is breathable, allowing body heat to pass through it and provide a comfortable sleeping surface. Mattress protectors are recommended for all mattresses. They offer mattress protection and ensures a healthy sleep zone. All moisture proof mattress protectors need to be removed from the mattress and washed within 24 hours of being soiled.