Material is good however it doesn't take more than 30 to 32 sheets per protector............My recommendation is to make bigger size that can take at least 50 sheets per single protector.
I had printed out an ebook for my business needs and decided I wanted it to last awhile and not have the pages all torn and scrunched up on the corners so I put the pages into into sheet protectors and then into a binder. Voila! It is working out wonderfully! I highly recommend these as the quality is really nice and these will last a long time.