Avery Diamond Clear Page-Size Sheet Protectors, 50ct (74203)

I use these sheet protectors because I am putting the pages into a normal two pocket folder that can hold pages that are 3 hole punched. Regular sheet protectors would make the pages stick out of the folder because of the added width for the holes. The only down side to these would be if you need to change out a page. Since the paper itself is three hole punched and attached to the binder, you can't just slide a page in and out to replace it. Not an issue, just the main difference between these and the other style available. They are durable, with consistent quality, and can really make whatever you are doing look more professional.