Rich Quantity and Different Sizes: there are 100 pieces of blue printing paper with 4 sizes, about 30 pieces of 14.8 x 21 cm /5.8 x 8.3 inches (A5), 30 pieces of 14.8 x 10.5 cm /5.8 x 4.1 inches (A6), 10 pieces of 21 x 29.7 cm /8.3 x 11.7 inches (A4) and 30 pieces of 9.9 x 9 cm /4 x 4 inches, sufficient quantity and styles can meet your and selection needs Easy to Use: our sheets of sun art paper are easy to use, when operating, just place leaves, paper cuttings and anything else you love on them, press them with transparent glass or acrylic sheet, leave them in the sun for 5-10 minutes and rinse them with water for about 1 minute, and let them dry, objects that eclipse the sun light will show up in white, with the rest of the paper turning blue; It should be noted that transparent glass and acrylic sheet need to be prepared by yourself With a Long Service Life: our sun paper is made of quality blueprint paper, reliable and serviceable, light in weight but sturdy in structure, resistant to breakage, tear and deformation; The images should not fade over time as long as you use the kit properly which can you for a long time DIY Fun: nature print paper can support you to invite your friends or family, to join your DIY projects to create pretty pictures, also be applied as a gift for kids in which can practice hands and hand eye coordination on ability, imagination and creativity Where to Apply: sun printing process is a good hands on activity to do with groups, and solar print paper is applicable on occasions, such as school, home, camping, craft classroom, library, club, party, hobby class, group, museum workshop, birthday party or any other group setting, get people together, share ideas and create art crafts and have fun Colour:blue Material:Paper Package Contents: 100 Sheets xBlue Type Paper Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.