I do not know the size if I had to guess I would say 4qt. In Wal-mart today, 12oz was $5.59 and this is about 33oz by weight. Not sure what to do with them. Kristin has already made 7sts of Blackberry Jam and some Syrup. I have already used the raspberries in 2 desserts, and made 5Qts of Jam. There is another bag full like this in the freezer and there will probably be 4 more harvests like this, so not sure what we are going to do with them!