Cukudy Merry Xmas Pillowcases Christmas Tree Decoration Pillow Case Covers Flannel Red 18" x 18" It is of high quality, soft Flannel(Short Plush) material. Don't have any skin allergies. The reference size is 18 inches square, approx 45 x 45cm. It may have the deviation of 1-2cm because it is Handmade. The pattern is only printed on the front. The effect of pictures just for reference. The pillow cover has an invisible zipper. It does not include a pillow insert. Please purchase the authorized authentic in DBuyee. Our products have quality assurance, usually it can be used 2-3 years. We have a professional after-sales service team, if you have any questions please contact us.