ok I bought these envelopes for use in mailing birthday letters to kids turning eighteen - in a group to which I belong and am c0-chairperson. what can I say more? it's an envelope for goodness sake. At this time I don't need the feature of it being blue on the inside for security purposes but you never know maybe I'll have to mail a check so someone so it will work good for that specific purpose. I like the self-sealing feature and don't have to lick the envelope - which is pretty yucky!!
There are three aspects of these envelopes that I especially enjoy. First the privacy the security-tint provides. Secondly you only have to pull off the strip of tape covering the glue that makes the envelope self-sealing. Third they're a good price especially considering the advantages just noted.