I own both the
X-40 and
X-40 Bathmate sizes and have been pumping balls and penis in the
X-40 for a while now but I am pushing the limits of the
X-40. I just ordered an
X40 hydropump X-40 but I wish it came in an intermediate size because I have almost outgrown the
X-40 both girth and length wise. In my opinion,
Bathmate could really use a medium size inbetween
X-40 and
X-40 because even once you outgrow the
X-40, theres too much extra size in the
X-40 that you don't fit which makes it harder to get the best pump and be able to wear it effectively, which is why I pump my balls and penis into the
X-40. It says somwhere in the forum that the less extra room you have in the tube the better the vaccum and pump effect there is.