First off, I'm not a big guy and my pe nus is, most likely average in size. The soft mastyrbators I've had in the past were always too damned tight. I wonder if anyone can suggest one that is larger and not overly tight--looser, I suppose. Anyone else feel this way about, at least, most "sleeves"?
Have you considered eStim? You can get a unit with eleastic penis bands for about $15, or get a full multi-channel TENS unit for about $40, and another $15 for a set of Bands. You control, the pulsing, and stimulation to your liking. It's a fantastic thing to have. Frankly, I've used mine away from home a few times.
