CelebrityCafe.com - April 2007
“Portable water container for outdoor activities
Last fall we went to a spa for hiking and biking. All the staff was wearing water reserve packs while I either held a stupid bottle in one hand or had it sticking out of my pocket for an entire two hour hike. They come in various sizes like 2 or 3 liters and are comfortably designed to attach to your backpack or wear with their own backpack setup. The drinking tube is designed for privacy and a clean delivery of the water and the reservoir can be turned inside out for cleaning. This unit was made for the professionals but was meant to be used by everyone.”
See article here
source: Celebrity Cafe.com