Every sheet is a perfect rectangle. The surface is so smooth you can almost write on it. So flexible you can fold it in half. Got so excited I kept folding until it resembled a small airplane. It even flew when I threw it.
I bought this product because it had the lowest price in the store for an individual ream of paper. The price per ream was much cheaper for a ten-pack but I really did not need that much paper at this time. The paper works fine - I put it in the printer and the documents print onto the paper.