For a presentation I needed flipchart sheets and since we had not in the business at hand, I looked around at Amazon. The paper must have a certain thickness and the boxes are for me a great guide when it comes to the size of the letters. Yes if you are not yet so there's presentations you can enjoy one of such a help.
Also I find it that you can also use the back of good and expresses nothing. So I am completely satisfied and can recommend the flipchart sheets of Herlitz