Other reviewers of juice boxes have some complained that after opening the juice box is not tight, to be transferred, and then the practical advantage is lost, as well as the shelf life at room temperature. Here's a tip: you should "fumble" the admittedly somewhat fiddly out of the tap just be patient and careful. If one draws too much, it breaks a the plastic welds. Take the time required to extract and avoid rough motoric tearing. If necessary, the inner container cope pull something so the cock moves to the right place. Then everything remains tight and the 3-month shelf life at room temperature is actually given. And one more tip: the Ausgusshahn dab always after the pin.
Personally, I find the juice boxes a good idea, because the plastic content is relatively low, and you can then disconnect cardboard and plastic and carry the respective recovery. Also shipping is simpler, less weight, and no risk of fracture.