- 500#10 Envelopes SELF SEAL Business Envelope Windowless Design, Security Tint Pattern for Secure Mailing, Invoices, Statements & Legal Document Mailing Envelopes, 4-1/8 x 9-1/2"- White

Arrived fast and works as described.

work so well my bills were mailed before they were even issued

paper quality is very good. none falling apart. not see-through. adhesive holds the envelope shut.

Great value... sooo many envelopes

I use my envelopes weekly for payroll and to send checks to some of my workers through the mail. I trust them because they have a great security block inside the envelope. Also the tab to pull off for the closure lip is easily accessible, not like a Christmas bow at all, and once it's closed IT'S CLOSED!!!! Unless you REALLY NEED to get back into that envelope-don't even try for any reason----BEST JUST GET A NEW ONE----unless you have TIME & PATIENCE!!!!LOVE, LOVE, LOVE THEM----KEEP EM COMIN

It’s great! Small compact and fully functional. Only wish it would come with different mounting options rather than screws. Small complaint! Good job Blink!

Envelopes were ok. There is an area under the flap on the left and right side that have no adhesive. But the price was good and will serve my needs.

500 self-sealing security envelopes around $20? Exceptional. The glue that seals the envelope closed looks like two-way tape, which doesn't extend all the way to both ends, allows the flap to be opened without destroying the envelope. So if you really want security, use tape for additional sealing. Unless I'm mailing sensitive documents, these #10 envelopes serve the purpose.