I had three of these bladders in use, two of them I had to throw away because the thread from the tube to the bladder itself is leaking, on the one hand it wear out, secondly, it does not close. If you swim a pint of water in a backpack because the bubble is leaking the intolerable, also lacked the amount of water for the tour. The third bubble is leaking now easily in the same place, probably still a printing problem and will also be discarded. For low mountain range only conditionally recommended when tight from the outset, otherwise unusable. Sure you can make a bag or the like (rain cover) during the tour about, but that does not change the basic construct of the bubbles with the thread. The plastic taste goes away only after several operations, but is in almost any hydration system like this.
