[Heaven's Night]

notveryinteresting, you asked about lube, I use run off the mill Nivea body lotion, the creamy kind which has vitamin E in it. Its mild, slides enough and is very good on keeping skin moist. I usually apply only around bottom and middle so that the cups pull the most right there where I've been missing most, this also helps them from slipping too far to armpits to avoid pinching nerves. There's one known case of someone on Nexus getting actual nerve damage from pumping so this is a valid concern to pay attention to. So yes, lube or lotion is great idea to keep the cups in the middle and for a good seal and also for avoiding broken skin and lesser irritation.