Pillow Protectors Set of 4: These pillow protectors are tailored to fit Queen-sized pillows, each measuring 20 x 28 inches. (Please note, this set includes pillow covers only, not the pillow inserts.) Polyester Knitted Jersey: This fabric provides great comfort and features a TPU coating on all sides to make it waterproof. Zippered: A premium zipper and double-hemmed stitching keep your pillow securely enclosed and protected. Easy Care: Machine wash gently with the waterproof lining facing inward and tumble dry on low heat. Avoid ironing, bleaching, or dry cleaning. Bed Bug Proof Pillow Covers: The high-quality zipper completely encloses the pillow, offering strong protection against bed bugs. (Packaging may vary)