Seriously though, with body temps hovering near 100 degrees this has to be an efficient way to store beer, oh I'm sorry - WATER, for about 5 minutes.
That site is so lame. The whole history thing is bs of course ("I got tired of being ridiculed by friends for drinking water to relieve my hangovers..."

) and the testimonial by the guy who says "It paid for itself in no time at all...I bought a Coke and just kept refilling it!" makes me want to poke my eyes out with a pencil. Just inhale deeply, puff out your chest, and say it's for sneaking beer and other alcoholic beverages into sporting events because the average person doesn't appreciate spending $7,512 on a longneck.
After all the disclaimers about not being for alcohol, it even says that you can wear two pouches, fill them with different liquids, and make mixed drinks. What are they talking about? Grape and cranberry juice? Because when you think "mixed drink" you think fruit juices and/or different flavors of Gatorade, right?