Compared to some of the other oddities I've reviewed in the past, this was relatively cheap at $12.
I followed the guide on this to wear. I am circumcised and I followed the appropriate steps for cleaning and drying. I even watched the video.
Even with an empty bag, the weight was putting the tape away.
After only an hour of wearing this, the moisture from my body, added with a little bit of drainage, added up to a completely failing device. I would never wear this in public as it's doomed to fail.... for me at least. Perhaps if you have foreskin, this would adhere better. I still wouldn't trust it personally though.