Great price for these mailers!
925391
So far they've carried books down to Australia, and calendars & apparel within the US.  No complaints from my recipients ... no tearing, the seal has stayed stuck.  Very happy.
512533
Great price, decent construction and a good seal when the door is closed. I bought five of them to replace the 10-year old metal mailboxes installed at my multi-unit condo. They look great (I numbered and lettered them with 1-inch vinyl letters) and my neighbors and I are happy to have dry mail again!
4397320
I make my own cards -- birthday, holiday, et.al., -- and these envelopes are the perfect size for mailing.  When I have long mailing lists that need to go on the envelopes, they process through my printer with ease.  The price is substantially lower than what they sell for in discount stores. If you print on half and half fold 8.5" x 11" paper, these envelopes are an excellent choice.
4716493
I couldn't be happier with these business envelopes! They were a great price & came promptly can't beat that.
1145549
Awesome envelopes for a great price. I've shopped around and these are the ones I plan on using from now on.
1774297
These are great for mailing pretty much anything. I frequently send out mail, almost on a daily basis and these are great, especially at such a fair price! The material is good enough to protect from rain or snow. I will definitely be purchasing again!!
3046116
Great mailers. I ship a fair amount of stuff, from video games to calculators and this size envelope is perfect for most things I ship. I try to reuse as much packaging material as I can, but this is a great alternative for when you just don't have any.
They are fairly tough and offer a good amount of protection. I would recommend adding a few layers of bubble wrap or foam, if the object your shipping is fragile, just to be on the safe side.

Overall I like these a lot, and will most likely be buying more.
4737652
Excellent value.  The mailer envelopes are sturdy and work great for mailing books.
4075298
I have a small online business and these are great. 80% of the use is on 6x9 white Tyvek envelopes. I have never had an issue with them getting stuck in my printer or curling issues. They are not as thick as the Avery, Office Depot or Staples brand equivalent, but they work well and a fraction of the cost. I just placed my third order for these and will continue to buy them.
2889071
Great deal on mailers. The self seal is great and the quality of the mailers is good. Nice cushion. Will buy again from this seller.
4607562
<a data-hook="product-link-linked" class="a-link-normal" href="/Columbian-CO627-Columbian-Catalog-Envelopes-Gummed-Flap-6x9-24lb-White-Wove-100-box/dp/B0006VNV7M/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Columbian CO627 Columbian Catalog Envelopes, Gummed Flap, 6x9, 24lb, White Wove, 100/box</a>

I needed blank, white, 6x9 NON-CLASP envelopes - I found these and ordered them - the price was a little scary because it was so inexpensive compared to buying a box of 25 for almost $10 but when they arrived and I checked them out, they are nearly perfect.  The only thing I wish I could have found was the same thing with the self-sealing flaps but those, obviously, are a lot more expensive.  But these work great, they run through my printer really well with no jamming or any other problems.  Excellent product.
3077577
A durable design that fits my mailing needs. Able to forward materials without additional refolding that I have had to do with the 6 by 9 1/2 envelopes in the past.  An outstanding price for the quantity of envelopes. Inner box did arrive slightly damaged but none of the envelopes were affected. Shipment received on time for my holiday mailings. I would purchase from this supplier again in the future and will recommend them to others.
482745
Perfect mailers for so many things! I love having these on hand for all of the various mailings I do. Just a touch smaller than what I could fit into MFRB's from the post and I find them perfect for most things that I mail.

The quality is nice and all of the seams are sealed well. Very good buy! I will be ordering again!
740498
Very nice mailers.  A little thinner quality then my smaller version, but work well.
3915077
Great Mailers.  used them all already, very handy for Business Purposes.
2608748
Great price and super fast shipping. No issues with the bags. Was able to mail out 6 xl sweatshirts in one bag!
2087228
These were perfect for mailing small items! The price was great, labels fit, the items arrived safely (as long as you package them accordingly), and the seal is unbreakable. You won't lose anything in transit.