RE: Protein loading and how it can go wrong

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That's a question that all of us have about those things. I don't know for sure but i would be willing to bet that it was a marketing gimmick many years ago to make their product look bigger than their competitors while only spending a few cents per bottle to make it that way.

These days a lot of the packs are just bags, which is probably a lot better for the environment. I reused all of my old ones and just fill them up with something else. You can't do that with the bags though and they are also made of plastic so i think it is a lose/lose situation.