The Staples EasyClose Envelope is an inexpensive envelope great for high volume use. It is fairly sturdy to stand up to perils of the mail service. The pull strip is easy to peel and stays closed during mailing. The glue does not bleed through the envelope to damage the letter or contents inside. Do be careful to not let the letter come in contact with the glue because it is difficult to remove. So place the contants in first before closing the envelope. The security-tiny does block most view from being able to see the contents.
I love these envelopes. They give you the security that you want when you send out sensitive things. I don't have to worry that someone is going to be able to look at what you sending out in the mail. Plus the easy close part is great. I always hated licking the envelope close and this eliminates that part.
Love them no longer have to lick 40 envelopes a day. Just peel and stick and there ready to go. If you work in an office like I do then this really saves you some time and everyone knows time is money.