Quality & Comfort-Our Microfiber pillow cases zippered standard Niagara Pillow protectors are non allergenic pillow covers. Plain weave pillow encasements ensures softness,smoothness and bed pillow protectors are allergenic pillow covers. Breathable Fabric -Our Pillow protector pillow encasements are made in all sizes Standard 20" x 26", Jumbo / Queen 20" x 30", King 20" x 36" to create soft, and breathable and enhanced protection.