The size doctor extender
Has anyone used the size doctor extender? It uses vacuum to hold your head also enlarging you head. It looks a bit expensive so I wanted to hear from others before moving forward with a purchase. I have been using an older Peni-master which uses a strap to hold you penis in the cradle, which slips. This is why I am looking at other systems to improve my grip.
Please let me know what you have to share.