Place any object or transparency on the Sunography paper or fabric, expose it in bright sunlight, and rinse to reveal a rich blue print. Sunography is light sensitive on both sides, to make two-sided prints. Sunography prints can also be toned yellow or sepia using rinses with common household liquids. Sunography is made from high-quality materials, each pack has either 6 sheets of white watercolour paper or 6 squares of cotton fabric in six assorted colours. Paper sheets measure 5″ x 7″ (17 x 12.5 cm); Fabric sheets measure 6″ x 6″ (15 x 15 cm)