These AmazonBasics envelopes are decent enough and come at a good value. I have not had any problems with the ends popping open, like some reviewers noted. Issue may have been fixed, or only affected small batches. I don't particularly like the peel-off adhesion on these, as it sometimes doesn't stick as well as I'd like, especially when the envelope is loaded up a bit more. The transparent window works fine if you need that. Overall, though, a decent batch of envelopes at a great price.