Linen Size: 4 PCs square pillow covers.18×18 inch / 45×45 cm. Material Composition: 100% cotton linen material. Material is processed to protect against any shrinkage after washing. More durable than cotton. Printing on one side. No Filler/Insert. Pillow case have sturdy invisible zipper. Zipper glides smoothly and allows easy insertion and removal of pillow inserts. A Perfect gift for her and him. Hand wash or dry cleanable.