First Need Direct Connection: The First Need will attach directly without an adapter to bottles which measure 63mm on the outside of the opening and 53mm on the inside of the opening (ie, standard wide-mouth Nalgene bottles).
Wide Mouth Direct Connect Adapter (pn 320210):
Pictured on the right of the photo. Fits Camelback hydration systems and other popular wide mouth bottles. The adapter is for bottles that measure 53mm on the outside of the opening and 43mm inside the opening.
Narrow Mouth Direct Connect Adapter (pn 320200):
Pictured on the left side of the photo. Fits Platypus flexible bottles
and
other popular narrow mouth containers including standard size
1.5 liter soda
bottles.
Note: Red arrow indicates the cap and the blue arrow indicates the
adapter. Each adapter is sold seperately. The coin between the
packages
is a quarter.
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