The envelopes seem fine and I agree with the other reviews for the most part. However the window is too low for my checks and some of the memo line shows. I have to cover the info with a piece of tape. Also I really do not need 500 envelopes. I wish there was a smaller quantity offered.
A lot of the envelopes were stuck together and/or were partially sealed so much so that I couldn't use them. It worked in a pinch but I wouldn't buy them again.
The Staples left sided window envelopes are not only cheaper than brand name but are also very high quality from the standpoint of paper stock and adhesive.