The catalog envelopes are strong and do not reveal any sensitive material enclosed. The only improvement required is a better glue on the flap to seal the envelope.
they look good for what we are using them for. Hopefully the gummed part sticks. We bought the smaller yellow/brown ones 6"x9" and the gummed flap does not stay sealed very well.
These envelopes are important to me because I mail full size letterhead sheets containing personal information all across the country. I prefer not to have to fold them because they don't look as professional that way. Besides you can't send as many sheets in a #10 or # 6 envelope. Sadly these envelopes won't feed through my HP Office Pro printer so I have to type the addresses. These envelopes will also hold a file folder. If an individual has to mail professional papers I highly recommend these envelopes. They are also great for mailing 8 x 10 photos.o