I use these regularly and they are my main source of bagging leftover bits, and sandwiches. I do feel guilty about using plastic for this and also worry about the source country which has had many problems with product quality. Still, the only alternative I see is a washable cloth for storing things. I already have glass storage with airtight lids but they are larger than many of the things I store in the plastic sandwich bags. So I guess for now I stick with plastic and these are the best of the lot.