Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: You pay for what you get but ...

You don't necessarily get what you pay for. Nothing is a bargain if it is unusable!First and foremost, I see no way to securely address these envelopes. I tried ink and marker. Both simply WIPE OFF! The surface is slicker than a ziplock bag with no opaque surface on which to write the return and ship to addresses. That is an essential feature for any mailer. Without the ability to address an envelope, it is useless at any price!I considered using address labels but there are enough negative reviews from those who have already tried and failed at getting labels to stick. Who wants to risk a package being returned or worse, wind up in a "dead mail" bin because the address became detached or illegible during shipping?Secondly, these bags are GRAY not white as advertised. That fact is not a big deal for me but the description is incorrect. Either way, these go back to the shipper and I will go back to the pricier but reliable Tyvek envelopes.Disappointed!