cock rings

Has anyone here tried the TechRing or ADAM Sensor? They're smart penis rings that measure duration and rigidity of erections overnight (or during sex) and send the data to your phone over Bluetooth. If you've tried them, what was your experience? Do they fall off at night easily? Are they...

Some men do not know about many of the new designs of cock rings that really help enhance erections and thickness of the penis. Here are a few made of different materials. Some guys like metal ones but I have found them uncomfortable. I like the ones made with neoprene or silicone. They are...