Having read all the reviews I was prepared to receive non-mesh, cheap plastic envelopes that are frankly overpriced. But I needed something last minute and because I wasn't expecting much, these little cases actually worked out really well for a recent lengthy road trip. I used them for sorting various papers and keeping cash, tickets, and miscellany. They're decently flexible, have quality zipper pulls, and held up to dozens of daily open/close moments. I feel they're most effective for items that lay more flat, because even the larger sizes aren't designed for bulk. The bargain basement 'mesh' printed design is entirely unnecessary and frankly silly, but for safety pins, hotel receipts, rubber bands and cash denomination sorting, again, they held up quite nicely. They should be priced at half of what they're sold for, but I still don't think I could buy as many envelopes of various sizes at my local dollar store. If you're not a frequent traveler, don't require hard core protection/storage, and desire mainly paper organizing these should do the trick. If you're budget conscious and not embarrassed by using Zio-loc bags then just use those and save yourself the $$.