Sheet protectors are one of those indispensable things everyone needs and it makes sense to have some that just work well. These are archival quality so you can store anything as far as I know without danger of interaction with the sheet protector. This means whether you store ultra high quality photos or prints or just something as mundane as the 40 pages of my ZTR mower's parts and user manuals the contents will be protected. Acid free latex free 3.3 mil heavy duty thickness archival quality -- what's not to like about this product?
These Staples Heavy-Duty Sheet Protectors seem heavier than ones I have used in the past. I found the individual protectors very difficult to open without licking my fingers and trying to rub the two sheets of plastic apart. It is also very difficult to insert papers into the protectors they do not slide in easily. They are definately heavy!
The Staples heavy-duty sheet protectors in letter size are used in my office for arranging and storing documents in three-ring binders because the size fits perfectly with standard letters the protectors are heavy enough and very durable document ink does not stick to the surface of the sheet protectors and because they are clear and without flaws documents are easily visible. Also the sheets are latex-free thus not a threat to the many persons who have trouble with latex products.