PVC material, easy to keep in shape and leaves no residue when the windows are peeled off. Keep the smooth surface clean, tear off the pattern you want and apply it to the smooth surface with a slight pressure. You would see that the Christmas window sticker is securely in place. Before using the stickers, moisten windows, doors, etc. with damp cloths, then stick the Christmas snowflake stickers on Christmas window decorations are ideal for decorating windows, mirrors and glass doors and are perfect for Christmas parties , winter parties and Christmas decorations. Double-sided design: six plastic films are shaped like snowflakes and are suitable for creating a winter wonderland. Specification: 20cm*30cm, 9 sheets in total Double-sided printing, electrostatic film Note: Due to manual measurement, please allow 0-3cm differences. Thanks for understanding. The monitor calibration method is different. The color of the product shown in the photo may be slightly different from the actual product. Please refer to our size before ordering. Package Quantity: 1 set (9 sheets)