When I received the vape we have had a recent artic cool flow here so I was glad to have a wall heater which I knew from other purchases of other similar enclosed operating units to do at warm length. So, my first inhale, one a third lungs full up, was smooth, very good taste, esophageal reverb producing, with a diaphragm(ic) dip creating response to exhale was exceptional. I replaced the covering sleeve for the night. I was able to stretch, the capillaries responded with a few waves of relaxati...