I purchased a box of the envelops in the past and I should have learned from this experience. While the envelops provide the security I was looking for the adhesive does not seal the envelop. As before I have to tape the flap to secure it.
These are my go-to envelopes for everything from bill paying to sending greeting cards. The envelope is secure and no inserts are readable from the outside. The adhesive on the flap is strong and closes completely. These envelopes are a good buy and I am pleased with the quality of the paper. I think the most important feature is the security factor. There are times when I send something in the mail that is confidential and I have no qualms about enclosing it in one of these fine envelopes and dropping it in the mail.