I think these bags work just as well as other storage bags, but I like that the measurements on the bag are fairly accurate when you poor milk in. I have used other brands that are off by an ounce or more.
These protein bars taste delicious. I ate them as a midday snack,but paid the price the rest of the day. My stomach did not like them. It took me awhile to figure it out. I love an out and didn't replace them for a couple weeks. When I ate them again I determined the cause of my pain. :( they are very tasty though.