These are nice, solid, well-made bags. I can tell they'll last a long time. I wish there were a medium size with a gusset, somewhere between the snack bag and the sandwich bag. That would be perfect for chips and bulkier snacks. I also have a little bit of an issue getting the bags to seal, but I think that's because I'm filling them too much (see my request for a medium-size snack bag!).