50 Pack 14 x 11 inches Security Self-Seal Envelopes Blank Stay Flat Photo Document Cardboard Envelopes Mailers Large White Chipboard Mailers

Just sturdy enough to not need a bubble mailer

Delivered on time. Product was what is said. Good service

A little bit flimsy, compared to slightly smaller size, and the tape strip works just okay. I have to put another piece of heavy cardboard in with the document, to help keep item from getting damaged in the mail. The price is right, and I will keep coping with them, as the next grade up is just crazy expensive.

These are NOT rigid envelopes. They are very thin & floppy, as seen in the photo. I need something rigid & sturdy to protect my paper banners during shipping. These are not it. Returning.

Although the product description includes the word "rigid", these are in fact rather floppy, so offer little or no protection for contents. Of the many times I've purchased rigid mailers, these are the least rigid.

You may as well put your item in a bubble mailer... Even doubling these up they are still INCREDIBLY flimsy, I use ~400 rigid mailers a month and these are by far the worst I've ever tried.

Easily bendable. for a rigid mailer, that should not happen. if you are looking to not have your items being bent during shipment- buy something else.

I ordered two of the 60 packs and only received 50 in one pack and 49 in the second pack. It’s false advertisement. It’s like they don’t even count the correct amount.