okay, you all may think I'm crazy...  but if you have any friends that are pilots/aviators, this is a really good thing to have stowed in the back of the plane for an emergency.   When you're on a 5 hour flight to Myrtle Beach and you can't just "drop in" to a gas station along the way it can really be great.  Sporty's Pilot shop sells these things for a few times this price and the "Lady J" adapter is an added "accesory".  I've not used one yet... but seems like it could really be helpful for the pilot with a small bladder.  Just thought I'd let you know.
dav