These envelopes are cheaply constructed. The flap is too small and the adhesive is worthless. Cheaply made envelopes that won't stay closed. I had to tape them shut after to keep them closed. I would give this zero stars if that was a choice.
Definitely looks more professional than the manila style. Easy close is far superior to the the press and seal envelopes that seems to stick to everything you don't want it to. Truly an office "staple" . . . get it . . . staple. Oh yeah.
I just recently had to do a bulk mailing of over 300. I did not put a lot of weight in these envelopes but 90% of them would not stick closed so I had to tape ever one of them. If you have more than ten sheets of paper in these envelopes they are worthless. I went back to Staples to see if I could buy a different brand and they only had the Staple brand envelopes so I guess I will need to change stores. I was very disappointed and won't be recommending these to anybody or using them myself. WORTHLESS