we used these inserts to hold our "Lost God" flyers that we had printed. The worked great. They kept the flyer dry as well as eye catching when posted in business or on telephone poles in the country. THEY WORKED our dog was located and return after 7 days.
This is a lightweight protective cover with a side opening that faces the rings in a binder. We are using these as holders for calendars that we print here at home. Once printed this allows us easy access to the calendar for additional notes and appointments as the month progresses. Since these are held up by push pins the fact that they weigh so little makes them the perfect solution. We also use dry erase markers on the surface of the Sheet Protectors to mark off each day as it passes. This leaves us with an unmarked calendar underneath for reference in the future. I have not seen any heavier side insert protectors but would buy those if they became available. Still this does the job for us!
These page protectors are transparent in their attempt to safeguard my documents. They are completely clear making them clearly superior to any solid or opaque sheet protecting product. It is easy to gauge their motivation as you can see right through them unlike some people I know but we won't go into that here in a public forum that anyone can read. The review asks that I focus on "product performance." I have never heard these page protectors sing or watched them dance or act so I cannot comment on that aspect.
These protectors are items of many different uses. I have reference papers that change items regularly and the need to remove pages and replace with the updated pages is very easy with these side insert sheet protectors. Being able to clip into a binder also keeps the papers from sliding out and getting lost or damaged. I also use these clear protectors to store photos. The protectors keep the pictures clean and neat and easy to fine the ones that I need. Papers that I need for long term use are kept clean and organized for quick reference. Great item glad I purchased a box full.