
I have bought three of these hydrators and all three have had the same problem. There is a seal at the end of the hydration tube (that goes into the hydration bladder) that falls off VERY easily. This will drain all the water. I lost all the water several times. It's very frustrating to realize that my bladder is empty and the trunk of my backpack is full of water. Otherwise, these bubbles are of great value, but this glaring design flaw renders them useless. They should come with extra pads or have a better design to minimize the problem of pads falling off easily. The attached photo shows the end of the pipe with the seal missing.

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