I-foldable Pack / Tetra Pack

It is advocated that we should squash the Tetra Pak flat after use, as to be friendly to our environment. But many people still ignore this behavior caused lots of waste. Now, the I-foldable Tetra pak is used the theory of vacuum, and the idea is from accordion. The difference than ever is: as long as you drink more, the Tetra Pak package will become flatter automatically. Besides, the material of Tetra Pak is stable enough to prevent from rebounding back. The benefit is that you can save the move of squashing the box, also can easily see how much the beverage is left. It includes both for convenience and environment protection purposes.