We iron all the curtains before we pack them into a box, however, certain fabrics such as Antwerp, Solid, and Mist are more prone to wrinkles during the packing and shipping process. All the pleated heading style curtains will be packed fan-folded for easy and neat transportation and installation. We suggest you hang them up after receiving them and use a portable steamer to steam it if necessary, such as this one Conair Turbo Extremesteam. If you would like to use an iron, please set the temperature to low to avoid leaving marks on the curtains.