I’ve been hooked on juicy cockring / pump cushion by oxballs for a while now. It fits my 2.25 wide flange tube perfectly (2 is a no go). I had a juicy XL that I used for full package pumping but I ruined it while being a dumbass. I would just stuff a jagged vinyl hose between myself and the silicone gasket, use my mouth to get to pressure and yank it out. Not only did it fuck up my skin where I did it, but it also scuffed up the silicone, which turned into a scrape, then a cut, then a hole, then I got it up to 10hg and it popped / ripped in half. Since then I’ve learned to use smaller tube, burn the end to round / taper it, use a lot of lube, minimize the amount of in/out I’m doing (aka longer sets), and diamond grit sand the tops of my jars to get rid of any seams / sharp edges. I plan on plumbing vac lines into my STJ which will reduce the wear and tear on my juicy XL ring when I try it again. The normal sized one doesn’t fit onto the jar I use for STJ, but if I pump for 10 mins without the gasket, I can then stretch the normal one around my full package first, then get into the tube and the gasket fits, but it gives me horrible aligator bite because it’s too tight / tall. The juicy XL is wider diameter / lower profile and could comfortably go from 3-4 inch easily.
I’m at the point where I can comfortably pump at 8hg for 20 mins in my 2.25 because it feels really comfortable. My full package pumping isn’t nearly as impressive because after 5hg the glass starts pinching my taint. I’ve tried pumping through the pain but it just left horrible chafing that needed to be moisturized and exfoliated.