I bought this binder to keep fabric samples I have made to show what various feet on my sewing machine can do. The samples are necessarily quite a bit thicker than a sheet of paper but the sleevess opened readily to accommodate them. I really like this way to organize them in a helpful attractive way.
Like this product as it is well made and comes in a 12 and 24 page version if you need to show more. Has extra space in middle to accommodate volume. The sheets are very thin and it make take a bit to open the insertion side but durable. I recommend this product.