I bought these protectors sheets to organize several important documents that I have and to organize several items that my children have acquired over time. They are cheaper per sheet by buying in the 100 sheet pack. The thickness at 3.3 mil which is better then the thinner ones and they fit in a notebook with ease. For the cost and durability I would recommend these for the purpose I am using these for. I have tried the thinner ones and they tend to split if you are trying to remove any documents and re-insert.
My wife uses these for her recipe and Crochet Patterns. They help keep the printing Sharp and clear ! The sheet protectors are very durable and stay clear and do not discolor. She is sold on the quality and the great price !
I keep papers organized by day in a binder and these sheet protectors keep everything clean and neat. They heavy duty ones are the best they don't tear or bend and it is easy to get pages into them more than one at a time. I usually keep about 5 papers in each page.
We have used these for over 10 years. It is obivous Staples started using a new material to manufacture these. They are impossible to open and its even harder to slide papers into them.