Quality Park9 x 12 Catalog Mailing Envelopes, First Class Border, Redi-Strip Self Seal Envelope Closure, 28 lb White Wove Paper, 100 per Box (QUA44534)

These envelopes seem perfectly fine but I'm only giving them 4 stars since they don't match the photos that were in the listing when I bought them (though they ARE Quality Park #44534). It's NOT a big deal at all and I'm happily keeping them, but what you see and what you get should always be the same thing so I'm reinforcing that message by knocking a star off an otherwise 5-star product.Oh, and yes these are made of paper - which is what I wanted. If you're looking for tyvek look elsewhere.

good quality envelopes. glue works well. It is standard quality, not cheap or high-end, but just what it says it is.

I love these. I use them to put my single orders of t-shirts in. It's the perfect size. The peel and stick closure is good. I've not had a single problem with them opening.

Very well made, useful

I'm very happy with the cost, quality, and amount of the envelops! Thank you!

Very nice quality. They are NOT tyvek material like I thought, but they are a nice heavy paper envelope. Twice the post office has told me that they are really nice first class envelopes.

This product is not what you think. They are regular paper envelopes and overpriced for what they are. They are NOT the durable Tyvek envelopes that made of that almost tear resistant cloth-like material.It is disappointing that this company does not make the type of envelope that they're selling more clear. But clearly they do this deliberately. I guess they're only interested in one time customers. It seems that they've figured out how to delete reviews that point this problem out since they only had a handful of reviews when I placed my order and all of them were positive.This product is useless if you are looking for a strong envelope that won't accidentally tear.

Like these, only ones I use.