Note: the water-soluble pen is not a watercolor pen. The color of the water-soluble pen on the cloth should be lighter, and it can be washed off with water. Please take it carefully.
Special attention when purchasing a white water soluble pen: The white water soluble pen usually needs to be painted on the fabric for 2 minutes before the color is displayed. Moreover, there are many requirements for fabric and leather, and many fabrics are not suitable.
The products themselves can be painted with colors, but due to different fabrics, some can be painted with dark colors, some can be painted with light colors, and a few even cannot be painted with a water-soluble pen. This is an issue with the fabric material, not with the water-soluble pen. If you encounter a problem where the water-soluble pen does not draw the line, please replace the fabric. This issue is not an after-sales issue!