There are three types of A4 size and one type of A5 size. The number of sheets for each size has been counted and attached to sticky notes, so please check the photos. I have counted carefully, but please forgive any errors. There are no signs of dampness, yellowing, or folding, but as they were purchased at different times and have been stored at home for a long time, I do not recommend them for long-term storage of printed materials. I hope you can use them for a rough check of colors, temporary notices/handouts, or crafts to enjoy making things.