Yes, I wear a 70oz camelback. I suppose my back get's hot and wouldn't mind if the camelback incorporated something to allow better ventilation. Might even pay a few bucks if it could be retrofited to my current camelback (and worked). Might pay as much as $15 but only if I was feeling really flush and it came highly recommended. $10 would be an easier sell. Agree that an inch is too much. It would have to attach to the pack and not my back so it would slide around with the pack and go on and off with it.