Originally Posted by
Amesja
We met a guy with a really high-end camelback that had a sprung mesh net bit that held the rest of the pack about an inch and a half off of your back so air could circulate. There still were the straps over the shoulders and the belly belt but the small of the back was free to breathe.
that describes the Camelbak Mule, built for mtn biking. that is the model i use.
"sweat rash" -- i don't know anything about that.
you're right Amesja, they are great for hiking. i have a larger one for dayhikes.