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: 7.4×10.5cm/2.9×4.1 inch (A7)Package contains: 12 sheet cyanotype sun paper with 1pcs acrylic transparent boardAre 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.