What is this?*Cyanotype paper is a special photosensitive paper used to make cyanotype photos, which can produce patterns after exposure. Artists and photographers often use sun printing paper to create works with unique colors and effects.*This paper set is also suitable for playing with family, allowing them to participate in fun and educational activities, cultivate imagination and artistic skills.What will I get?Size: 10.5x7.4cm/4.1x2.9 inch (A7)Package contains: 24 sheet x cyanotype sun paperAre there any advantages of the product?*The base paper of our cyanotype craft paper is made of good quality wood pulp paper, which is tough, washable and not easy to be damaged.*We use black light-proof tape for storage, which can effectively protect its photosensitive properties and ensure that the expected effect is achieved when used.