Male Masturbator White Hard Shell with Suction Cup and Concealing Cap

I searched out a hands-free unit, as I thought it would be a great experience. I had tried to create the effect before, with limited success. I have been satisfied with this purchase, but not because the unit works the way I would have expected. Here are my main thoughts.
-The suction cup actually works quite well if you dab a bit of warm water on it, but I had to do this to get it to stick, and it had to be a smooth, flat surface.
-The design of the silicone is firm and tight, which is a very pleasant experience when it works. It worked beautifully when I removed the suction cup. However, it was tight to the point that it was difficult to insert one's member, and it was very difficult to keep it inside while using the product as intended for a hands-free experience.
-The amount of material between the vibrator and inner cavity is thin enough that a few uses without the vibrator inserted was enough to tear it (so make sure the vibrator stays inserted).
-Very disappointed with vibrator. Not sure how it was even supposed to work, but I wasted good money on batteries, the vibration was weak outside the unit, and did not work within the unit as intended.

I have still very much enjoyed use of the product, but am disappointed that it did not work as a hands-free unit the way it is advertised and intended. I was able to get the hands-free to *mostly* work when I switched out the silicone portion with another unit I own, which was not so tight as to be restrictive.