The previous version of this size envelope - which is what we wanted to order but couldn't - was "pre-glued" and didn't require a clasp or moistening/glue stick so these are less convenient. Why need a clasp on such a relatively small envelope? We don't think this was thought through very well.
I purchased these envelopes to send information to my clients. I have used these envelopes every year for several years but this box contained many envelopes which were not glued shut along the back seam. I needed to tape the seam closed.