Been using it for my own scientific research for past 3 weeks. I personally have not seen much temporary or permanent gains. It’s bit early from what I have gathered in my research, but thus far, I don’t have much faith in the product.
I do feel the product is high quality. I do feel like it seems to be working when you are pumping. Just for me, it’s not retaining. I have read many reviews on reddit and the like, it’s certainly a mix bag of people who have gains and those who are just pissed after a year, they have seen nothing.
I feel there is also a lot of human error with measuring with this product to boot. The measurements on it are clearly wrong with or without the comfort pad. It’s off by at least a half inch to an inch. That means, if you pump up to 5.5 inches, you might as well be at 6 inches. The same holds true with the water and composite of the cylinder. It’s clearly magnified when you use it in water, giving off the illusion of your cock being larger than what it really is.
I’m around 6 1/4 inches BPEL and 5 inches EG. I maybe saw 5.1 EG one night.