We make most of our own cards so this size envelope is a must in our house. The paper is thick enough to conceal card contents. And since I cannot tolerate envelope glue I love the pull and seal feature. It makes it easy for a child to use as well.
I make and send over 60 calendars each month. I am Sunshine chairman for four organizations so I make and send many cards. Envelopes are the correct size for 1/2 fold cards. I am Queen Mother of the Red Hats of Valkyrie~envelopes are used for news letters. Envelopes are good quality and easy to seal. Not great-when other customers wrinkle envelopes.