Is it perfect? No but nothing is. The bottom line is that they cost [$] each and they do the job. If all I am doing is mailing some 8.5" X 11" pages and I'm not worried about water damage tearing or some other unusual occurrence then this envelope does the job at an amazingly low price. It's like a sub-compact car rental. Are there sturdier water resistant fire-proof gravity defying guaranteed to protect its' contents from Armageddon envelopes out there? Maybe but they certainly cost a lot more than [$] each.