Place any object or slide on the paper, expose it to sunlight, and rinse it off to reveal a blue print. Made in the USA with high quality materials and light-sensitive on both sides for double-sided prints Sunography exists in three dimensions:1) Paper — 12.7 x 17.7 cm (5\ "x 7\”) cold pressed watercolor paper. 2) Fabric — 15.2 x15.2 cm (6\ "x 6\”) 100% cotton fabric squares.3) 100% cotton fabric squares.3) Cards — 7.6 x 12.7cm (3” x 5”) 270 g/m² hot pressed paper in assorted colors. Fun to do with kids, workshop project for adults!