I have used these great little notebooks for years. They fit in my purse and jacket pockets so I can have them with me everywhere. I date & use different color covers to identify what I'm using it for journal observation/site notes "to do" lists and reference info. I also use the little tiny 2X3 size for note taking on outdoor tours. The cardbaod back allows easy writing. The only drawback is the paper has been thinner this year and that makes it hard to go back and read notes when both sides of the page are used.