perimeter to the tapered neck 18 of the hydration pouch 10 opening 17 the lower baffles 43 resemble a concave right triangle and is also a symmetrical horizontal heat seal that runs from each lower lateral 11 b side in a downward curve that meets in the center of the bottom 11 c of the body 14 the placement of each lower baffle 43 distributes the weight of the hydration pouch 10 so that too much liquid doesn 39 t accumulate at the bottom 11 c of the containment area 16 the unique placement and design of the upper 42 and lower 43 baffles as well as the inner baffles 41 in the containment area 16 allows the hydration pouch 10 to be manufactured with inexpensive materials with minimal concern for breakage during use it is important to note that liquids are to be added to the hydration pouch 10 via an opening 17 at the top 11 a of the body 14 between the first 12 and second 13 sheets the top 11 a of the first 12 sheet and the top of the second 13 sheet are unbounded and form an opening 17 for liquid to be added to the containment area 16 the unsealed top 11 a of the first 12 and second 13 sheets and curved upper baffle 43 creates a opening.