Linen Material: Our BIRD pillow covers are made of linen, which is breathable, soft and durable. Technology: The square pillowcase has an invisible zipper, which is beautiful and easy to disassemble, not easy to open the line, and not easy to deform. Size and packaging: only one 18 "x 18" / 45cm x 45cm (1-3cm deviation) removable decorative pillowcase (excluding pillows or inserts) Easy care: Outdoor decorative pillowcases can be hand washed or machine washed in cold water, tumble dry on low temperature, do not iron, if you are not satisfied with your purchase or have any questions, please contact us any time.