A Regrettable Purchase
The very worst part of this device is that there is NO release valve.  If you aren't familiar with a penis pump, the release of the vacuum that is created by these devices is, by safety standards alone, the most important and necessary mechanism built into these things.  A person can seriously hurt themselves by getting "stuck" in this contraption, which seems to be one step up from a child's toy mixed with a balloon inflator. The silicone insert is the 2nd worst part.  Now, I understand that all men are not created equal, and I don't want to add wood to the fire of stereotypes, but this product is built in Asia, and designers are always shortsighted in that they don't always consider their audience and they build things with their own perspectives in mind.  To be blunt, if you have a dick with the dimensions of a pencil, this product may work for you.  Sure, tight is good, but I don't need to be strangled, well, except for special occasions.  This is one of those products like clothes where you won't know if you like it till you try it on, but the major difference is that you can't return this one.  Or at least, you shouldn't.  God, I hope they don't sell these refurbished.  Ick!  In under 24 hours after receiving this item, it's now in the trash.  The lesson I learned is that a hand is the best tool for this job, and it's free and you don't need instructions and it's reusable and good for the environment.  I could go on and on, but I digress.  YMMV, so good luck and happy hunting.
Rating: 2 stars