We love these envelopes. They are the best. We fit everything in them from make shift birthday cards to anniversary cards to holiday cards including Christmas Chanukah to Kwanzaa and everything else. We celebrate all holidays and especially we love to put all of our children's school work in these folders. Once we kept our daughters art work from the first grade. We just opened it last year. My daughter is now in the seventh grade. It was kept perfectly for six years. We are very pleased to keep these folders.