Milk in a bag 1

While on our trip to Montreal Canada we noticed that the grocery stores that we visited did not have gallons of milk like we were used to buying. They of course don't use the gallon measurement anyway, but the largest bottle we could find was a two liter (close to our half gallon). If you wanted more you either had to buy multiple two liter bottles or you could buy one of these four liter bags. We assumed these were for refilling the smaller bottles. Just thought I'd take a picture to show this because it was something different for us. It would be nice and more environmentally friendly if we would have these in the states. Doesn't create as much waste.