I'm very aware of the impact my choices have on the future of this Earth, where my descendants will need to live. These may soak through after a few days if you use them for wet stuff (absolutely no soup!), so they're not for long-term storage. However, rather than sending my 'good' storage containers home with someone else, never for me to see them again, these work great. Cheaper than reusable plastic and certainly not as harmful to where you live when you're done with them. Good stuff at a fair price.