this is amazing! I have had bananas in this bag so far for over a week and they are exactly the same as when I first put them in. the ones I bought were a little green and they still are so am going to have to start buying my bananas a little riper. they haven't changed one bit at all. as long as you let the air out and tie the tie properly they wont change colour. I keep them in the vegetable section of the fridge.