I've found that cockrings are pretty awesome for an immediate gain in girth. I've done pumping as well, and throwing a cock ring on after a round of that can be just mindblowing. And I have experienced some permanent gains. I used to always measure 5.5 around, but these days, with no pumping and no cock ring, if I'm fully hard, it gets to 5.75. If I've pumped and slap on a cock ring, it can easily reach 6 around, which still feels godlike in my hands. Actually, I wonder if part of the reason I reached 5.5 girth in the first place is because when I was a teenager, although I knew nothing about penis enlargement (or cock rings for that matter) my masturbation sessions always involved me getting my cock as flexed and fully engorged as humanly possible. I adored that feeling of it being as hard and fat as it could be, and then being able to experience such wonderful sensations simply by running my fingertips up and down the shaft, exploring the fascinating shape as it tapered a bit up from the base, then got thicker going up towards the head. Having a dick sure is great, lol.