I purchased these because I use them for sheet music, and the ones I had previously had a shine on them that at times prevented me from being able to read the notes...these seem to be just what I needed with more of a matte finish on them.Very good quality. Great purchase.Professional quality!These are nice and sturdyUsually you get what you pay for, but these are fantastic. I needed sheet protectors to organize tutorials in a binder. Each tutorial is multiple sheets. These fit completely inside the binder, accommodate multiple sheets, are perfectly sheer, and are easy to fill. Zero complaints. Even the box they come in is sturdy and easy to open and close!I purchased these with the intention of using them to hold some educational material in a binder for a workshop I offer. I work with dogs, so I wanted them to be a bit durable just in case. These were exactly what I was looking for and at a great price too!I did notice that they are completely flush with a standard 8.5 x 11" page height-wise. The top doesn't stick out at all, but it's flush and there's no extra room at the top. Not an issue to me, but might be to someone. They also likely can't hold more than 1-2 pages in one sleeve, they are a pretty tight fit. I like this because it means my pages won't fall out of my binder during transit. But it wouldn't be good for holding several pages in one sleeve. All in all, I like them and will be stocked up for a while!Was hoping these would truly be durable and heavyweight…they are not. Very disappointed and on top of that they have the Amazon logo on them. Wish I would have returned them.I have not found a better screen protector. Comes with so many and makes my binders so much neater. Absolutely love!!I spend a lot of time browsing the internet for recipes, and when I find one that I think I want to try, I print it. I know: paper is old-fashioned, and I'm definitely dating myself. But I like to have the recipe right in front of me, and a paper copy never runs out of battery power. However, it does have other potential problems. After having several recipes end up covered in smears of butter or droplets of batter, I started sliding the freshly printed copy into a page protector. The Amazon Basics page protectors work perfectly for this purpose. The plastic is as clear as good window glass, sturdy enough not to fight back when I am trying to insert the page(s), and tough enough to stand up to multiple wipings with a damp dish cloth. Also, they are economical enough to allow me to continue filling binders with recipes for a long time to come.For Non-USA --> Caution if using these for A4, the tops of pages will stick out.We are using these for 8.5x11" Bristol artists paper, which also go into the Avery folders, which is excellent and fit very nicely.The plastic leaves are nice and thick, will not crinkly and are nicely made (shame about the prominent branding however).I'd regard these more highly that any of the other plastic folders previously purchased.... remember at school how they were always flimsy, sad and broke/split? These look like they'd take a beating.Be interesting to see if Amazon Basics also would make these in A4.These are really durable, sturdy and strong. Problem is that means they are quite thick so you fill up a binder pretty quickly. Still, if you have valuable documents to protect, it's worth it. Happy with this purchase for sure.I like the protector sheets but I expected more transparency. They are not as transparent as Wilson Jones you can get in Costco, but I think they are more durable and for my purposes they will do the job.I was pleasantly surprised that this was far less expensive than the Staples 3.3 mL thickness. The thickness was the exact same with the same quality, but at half the price.