Has anyone had any issues trying to carry on a Hot Gear Classic bag? I've searched and found some were able to carry it on. Seems on the large size for what may be acceptable. It's definitely larger than what the airlines say is allowable, but that doesn't usually matter.
Alternatively, I've thought about removing the heating pad and using it in my Transpack since I know I can fly with that. Not sure if I'd end up starting a fire that way.