Proper Size: The cyanotype paper is about 15 x 10cm/5.9 x 3.9 Inchs,suitable for showing in a 6 Inch photo frame Sun-based Science: Use the power of the sun to create art,put plants,flowers or other things on the paper,then press it with clear glass or acrylic board,put it under the sun,then rinse the paper with water and dry it to get beautiful art Good Design: Sensitive nature printing paper is made of blueprint paper material,not easy to break or tear,light weight,but please note that it needs to be stored from light to avoid exposure Wide Application: Sun art paper is a great craft activity that can be used as a science tool to create together in classrooms,camps,libraries,etc. to develop children's interest and improve their hands-on skills,and the finished product is also beautiful decoration color:Blue Material:Paper Package Contents: 60 sheets x solar printing paper 1 sheet x acrylic plate 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.