I thought I'd share my experiences with pumping. I've pumped for a couple of years now, and it can be quite addictive after seeing how huge you can get and the different feel of your own member in your hand. I normally use a 2.5 inch velseal cylinder, and can pack it after a couple of hours of use. I recently picked up a 2 inch cylinder, which I can pack in about 30 minutes, which I'm finding to be more fun because I can get pretty thick with that, and do it more frequently. I also use a 3 inch from time to time but I can't quite pack it yet. I've also done ballpumping and I will say your balls can get ridiculously enormous after a few hours. As far as permanent gains, I do feel like I've gotten bigger over the years, but nothing along the lines of the immediate gains once you pull out of the tube. My measurements are 7x6 non pumped erect, and post pump is 8x8.