SmartSilk™ Pillow Protector SetThe SmartSilk all natural silk filled Pillow Protectors are made with their exclusive patent pending technology that ensures an increased level of comfort with its smart blend of breathable and moisture wicking materials. Feel the difference with the SmartSilk Shield Advantage, offering you a cleaner sleeping environment. Simply encase your pillow with the pillow protector that has been certified asthma & allergy friendly and you will be shielded