Jacquard Cyanotype Pretreat Fabric Sheets 30-Pack 8.5" x 11" Jacquards high-quality cotton sateen sheets come ready to use, pre-sensitized for cyanotype Easy-to-use sun printing process. Just expose the fabric to sunlight or UV, rinse and dry! Apply negative on top, or any object of your choice. Perfect for the classroom, group activity or personal art project Includes 30 individual 8.5 x 11 cotton sateen sheets