The sheet protectors were used for individual folded blue prints combined into book form. Protectors were heavy enough to protect them and they stored easily.
These are the best sheet protectors. I use them to put reusable activities in for kindergarten students. They can use white board pens with them and erase pretty well.
I really love the protectors. It works great for my genealogical(ancestrial) project that is being allot of information. They always have it on hand and hope that they will in the future also. Greatly love it. Thanks Staples.